User:Amiosi/List of design discrepancies

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Throughout the franchise, the design of some Pokémon received various amounts of changes. Some were temporary, only lasting for one or two games, while others remained for a fair bit longer, causing a disconnect between the video games and other Pokémon-related media.

Overview

The first few generations are interesting due to the sprites having been made before the artwork, rendering the "errors" and other oddities as nothing more than design revisions.

Generation I, for instance, had the original designs tweaked in some places, with Pokémon Blue giving the original roster new sprites, though the back sprites were consistently left untouched. Pokémon Yellow would later update the front sprites once more, this time explicitly basing them after the Pokémon's appearance in the animated series. In this game, the bulk of the issues stems from the updated palettes, which namely caused Rattata, Shellder, Cloyster, Starmie, Ditto, Porygon, Dratini, Mewtwo, and Mew to be visibly miscolored.

In Pokémon Gold and Silver, the sprites for the Kanto Pokémon are mainly based on contemporary Red and Blue artwork, with some of the new elements tentatively introduced there (like Nidoqueen's fangs) making a return. Much like with Yellow, Pokémon Crystal later changed a good handful of sprites, taking a Pokémon's respective artwork as a basis. This namely affected the Johto Pokémon, and this time around the back sprites were also updated here and there.

Generation III is very likely when artwork was starting to be made before the sprites, leaving most of the inconsistencies to changed colors or slightly off-model sprites.

List of sprite discrepancies

Generation I

Pokémon			Game	Reason
001		Bulbasaur	Generation I core series	Originally had round ears instead of triangular ones. The Red and Blue sprite has missing claws.
002		Ivysaur	Generation I core series	Originally had round ears instead of triangular ones, while it had two leaves instead of four. This stayed the case all the way up to Generation II. The Red and Blue sprite also depicts Ivysaur as bipedal, something which was never seen again.
003		Venusaur	Generation I core series	Originally had round ears instead of triangular ones, while the Red and Green sprite shows a rather different flower design when it comes to the petals and stalk shape, all the while having only two leaves instead of four. Petal-wise, it started off only having five, which stayed the case all the way up to Generation IV.
004		Charmander	Generation I core series	Originally had a dorsal ridge, as depicted in the Pocket Monsters Carddass Trading Cards and early Charmander artwork.
005		Charmeleon	Generation I core series	Originally had a horn instead of a head protrusion.
007		Squirtle	Generation I core series Pokémon Pinball	Originally had cheek patterns, much like Wartortle. Pinball's animated sprite has Wartortle's plastron design.
009		Blastoise	Generation I core series	Originally had a different cannon cover design, which stayed all the way up to Generation IV.
010		Caterpie	Generation I core series Pokémon Pinball	Originally lacked the pattern on its body.
011		Metapod	Generation I core series	Originally had crosshair-shaped eyes instead of droopy ones.
012		Butterfree	Generation I core series	Originally had differently-shaped wings.
014		Kakuna	Generation I core series	Originally lacked pupils of any kind. The Red and Blue sprite has two pincers, not unlike Beedrill's, as depicted in the Pocket Monsters Carddass Trading Cards.
016		Pidgey	Pokémon Pinball	Pinball has much longer eyebrows, as seen in Pidgey's Blue artwork.
019		Rattata	Generation I core series	Originally had a white tail.
020		Raticate	Generation I core series	Originally had more than three fingers.
022		Fearow	Generation I core series	Originally had three talons instead of four.
024		Arbok	Generation I core series	Both front sprites have the white and dark parts of the hood markings reversed. Back sprite originally had wave-shaped markings.
025		Pikachu	Generation I core series	Originally had a white belly, as depicted in the Pocket Monsters Carddass Trading Cards and early artwork. Generation I sprites also have a misshapen tail.
026		Raichu	Generation I core series	Ear design is slightly different, as seen in the back sprite.
029		Nidoran♀	Generation I core series Pokémon Pinball	Back sprite has misplaced spikes, and the Red and Blue sprite has no horn and different ears. Pinball's portrait has an extraneous tail, as seen in Nidoran♀'s Blue artwork, while the animated sprite lacks whiskers.
030		Nidorina	Generation I core series	Originally had a line running though the inside of its ears, not unlike Nidoqueen. Back sprite lacks spikes altogether.
031		Nidoqueen	Generation I core series	Back sprite has inconsistent spike placement.
033		Nidorino	Generation I core series	Originally had a tail, as well as a line running through the inside of its ears, not unlike Nidoking. Back sprite has very unrefined ears and dorsal ridge.
034		Nidoking	Generation I core series	Back sprite has inconsistent spike placement.
035		Clefairy	Generation I core series	Originally had pawpads. Back sprite is missing a wing.
036		Clefable	Generation I core series	Back sprite has a different ear design. The Red and Blue sprite has cheek patterns.
037		Vulpix	Generation I core series Pokémon Pinball	Back sprite has a completely different crest design. The Red and Green, Yellow, and Pinball front sprites all lack a tail.
038		Ninetales	Generation I core series	Back sprite has a completely different crest design.
040		Wigglytuff	Generation I core series Pokémon Pinball	Originally had a white tuft of hair instead of a pink one, as seen in Wigglytuff's artwork from Red and Green and Red and Blue. Red and Green and Pinball have a stomach pattern which doesn't reach over the mouth. The back sprite and the Red and Blue front sprite both lack the white eartips.
042		Golbat	Red and Blue	Features a long tongue only ever seen again in Pokémon Stadium 2.
045		Vileplume	Generation I core series	Back sprite lacks the white spots.
049		Venomoth	Generation I core series	Originally had a completely different wing pattern, smaller mandibles, and a less rounded pupil.
052		Meowth	Generation I core series	The inside of its ears is different, and the back of them is black instead of cream.
053		Persian	Generation I core series	Originally had dark paw and tail accents, like Meowth. Red and Blue sprite has pointy ears instead of round ones. Back sprite has the back of the ears black instead of cream.
055		Golduck	Generation I core series	Originally had more than three fingers.
056		Mankey	Generation I core series	Originally lacked the dark paws and tail tip.
061		Poliwhirl	Generation I core series Pokémon Pinball	Originally had gloves instead of fingerless mitts, which stayed the case all the way up to Ruby and Sapphire.
062		Poliwrath	Red and Green	Originally had more than three fingers.
063		Abra	Generation I core series	Originally had a segmented tail which lacked the dark ring near its tip.
064		Kadabra	Red and Green	Originally lacked the pattern on its stomach and had an extra finger. Back sprite has a protrusion on the back of the head.
065		Alakazam	Red and Green	Originally had a Star of David on its forehead.
067		Machoke	Generation I core series	Back sprite shows its crest as descending into a mullet.
068		Machamp	Generation I core series	Originally had less than five fingers. Back sprite lacks the lips.
073		Tentacruel	Generation I core series	Back sprite has a line which connects the two large gems.
074		Geodude	Red and Blue	Red and Blue sprite only has four fingers.
076		Golem	Generation I core series	Originally looked much gentler, lacking claws and sharp teeth. All the while having rounder, friendlier eyes.
078		Rapidash	Generation I core series	Originally had a spiraling horn instead of a smooth one.
079		Slowpoke	Yellow	Lacks the white tip at the end of its tail.
080		Slowbro	Generation I core series	The back of its ears is curled, instead of smooth.
083		Farfetch'd	Generation I core series	Originally had a motif on the tip of its wings, which stayed the case all the way up to Generation IV.
084		Doduo	Generation I core series	Red and Green have a different talon arrangement, whereas Red and Blue only has three talons.
085		Dodrio	Generation I core series	Originally only had three toes.
091		Cloyster	Red and Blue	Red and Blue sprite has a horizontal shell as opposed to a vertical one.
092		Gastly	Generation I core series	Originally had a less defined body, as well as more defined eyelashes.
093		Haunter	Generation I core series	Originally had four fingers. Back sprite has a different lower body design.
094		Gengar	Generation I core series	Back sprite has a smooth back as opposed to a spiky one. This is reflected in the games' intro as well.
096		Drowzee	Generation I core series	Originally had more than three fingers. The Red and Green sprite also has a more compact dark pattern, as seen in its back sprite.
098		Krabby	Generation I core series	Back sprite has two circular lower back protrusions.
099		Kingler	Generation I core series	Back sprite has relief, and the larger pincer is on the wrong side. The Red and Blue sprite has symmetrical pincers, instead of only having a single large one. As a side note, while the Red and Green and Yellow sprites are on-model, the larger pincer appears on the wrong side in battle. This is because in Generation I, a Pokémon's sprite gets horizontally flipped in its Pokédex entry. This suggests that this sprite was made with the Pokédex in mind.
100		Voltorb	Red and Blue	Has a small circle on its lower half, as seen in Voltorb's Blue artwork, which stayed that way all the way up to Generation II.
101		Electrode	Generation I core series Pokémon Pinball	Has a circle on its upper half, which stayed up to Yellow. Pinball instead has a circle at the base, much like Voltorb, as seen in its Blue artwork.
102		Exeggcute	Red and Blue	The central egg is way larger than it should.
103		Exeggutor	Generation I core series	Has a fourth head on the back, which stayed all the way up to Generation III.
105		Marowak	Generation I core series	Originally had a series of back spikes.
106		Hitmonlee	Generation I core series	Has inconsistent ankle pad placement, which stayed the case up to Generation II.
107		Hitmonchan	Generation I core series	Originally had a joined back plate, as opposed to two shoulder plates.
108		Lickitung	Red and Green	Originally had a split tongue, while its knee pattern was slightly different.
109		Koffing	Generation I core series	Red and Green sprite has smoke hands, as seen in its corresponding artwork and the Pocket Monsters Carddass Trading Cards. Red and Blue has the skull-and-crossbones marking above its face.
110		Weezing	Red and Blue	Head arrangement was inconsistent all the way up to Generation VI.
111		Rhyhorn	Generation I core series	Back sprite has inconsistent spike placement.
112		Rhydon	Generation I core series	Originally had its back spikes reach much further up.
113		Chansey	Generation I core series	Originally had cheek patterns.
115		Kangaskhan	Generation I core series	Originally had one large, solid toe, instead of one medium and two small ones. The space under its pouch is also brown instead of cream.
118		Goldeen	Generation I core series	Originally had a spiraling horn as opposed to a smooth one.
119		Seaking	Generation I core series	Originally had a spiraling horn as opposed to a smooth one.
120		Staryu	Generation I core series	Originally had a more natural, rounder body with little specks spread throughout.
122		Mr. Mime	Generation I core series	Originally had less than five fingers.
123		Scyther	Generation I core series	Has more connected head and torso with an odd plate on its back.
124		Jynx	Generation I core series	Originally had black skin, which was later changed to purple in subsequent games (and the Virtual Console version of Yellow). Jynx also started off with four fingers, which was changed to five starting in Yellow.
125		Electabuzz	Generation I core series	Back sprite lacks the back stripe.
126		Magmar	Generation I core series	Originally had less than five fingers, which stayed that way all the way up to Generation IV.
127		Pinsir	Generation I core series	Originally had tiny beady eyes.
128		Tauros	Generation I core series	Red and Blue and Yellow sprites both lack the extra two forehead stones.
129		Magikarp	Generation I core series	Has a back ridge as well as a clumsier scale pattern.
130		Gyarados	Generation I core series	Lacks its body patterns. Back sprite has a back ridge as well as a scale pattern.
131		Lapras	Generation I core series	The back of the neck has a series of dark spots.
133		Eevee	Generation I core series	Originally had white ear tips. Blue sprite has more fennec-like ears.
134		Vaporeon	Generation I core series	Originally had a bulkier, more dog-like build, with a black nose and fangs. Its head fin was connected with its dorsal ridge, the back of its ears was fully black, and its ruff appears to have been more akin to a bib. Both the Red and Green and Red and Blue sprites also feature ankle flippers which never seen again.
136		Flareon	Generation I core series	Originally had ears engulfed in white fur.
138		Omanyte	Generation I core series	Originally had slanted pupils as opposed to round ones, much like Omastar.
139		Omastar	Generation I core series	Originally had spikes sprouting all the way to the base of its shell.
140		Kabuto	Generation I core series	Lacks the relief on its shell and has a different "eye" placement. The Red and Blue sprite also has a different design for the extremity of the shell.
141		Kabutops	Generation I core series	Back sprite lacks the head horn and has a cavity in its place. Moreover, the back has a completely different plate armor design.
142		Aerodactyl	Red and Green	Originally had more than three fingers, as seen in Aerodactyl's Generation I artwork.
143		Snorlax	Generation I core series	Originally had three fingers, which was bumped up to five starting in Emerald.
144		Articuno	Generation I core series	Originally has a longer, thinner neck. Its chest fur was also less dense.
145		Zapdos	Generation I core series	Originally had three talons instead of four, as seen in Zapdos' Generation I artwork.
147		Dratini	Generation I core series	Originally had a striped underbelly as opposed to a smooth one. The Red and Blue sprite also has a more exaggerated snout shape.
149		Dragonair	Generation I core series	Back sprite lacks one of its tail orbs.
149		Dragonite	Generation I core series	Originally has an extraneous dorsal ridge. The Red and Blue and Yellow sprites lack the head horn.
150		Mewtwo	Generation I core series	Originally had the base of its tube reach further down its back. Its shoulder design is also different.
151		Mew	Generation I core series	Originally had a protrusion on its head.

Generation II

Pokémon			Game	Reason
003		Venusaur	Generation II core series	Still only has five petals instead of six.
009		Blastoise	Generation II core series	Still has a different cannon cover design.
011		Metapod	Generation II core series	Lacks the crest that goes down the middle of its back, all the while having an extraneous line connecting the eyes.
017		Pidgeotto	Crystal	While properly colored in Gold and Silver, Pidgeotto's beak was recolored to brown.
017		Pidgeot	Generation II core series	Tail feathers aren't all pink.
025		Pikachu	Generation II core series	Back sprite has a misshapen tail.
031		Nidoqueen	Generation II core series	Is shown with two fangs here.
035		Clefairy	Generation II core series	Still has pawpads, which were later removed in Crystal. Back sprite has an upside-down tail, which stayed the case all the way up to Generation V.
040		Wigglytuff	Generation II core series	Stomach pattern doesn't reach over the mouth.
054		Psyduck	Pokémon TCG Pokémon TCG 2	Has a brown beak and brown feet.
055		Golduck	Crystal	While properly colored in Gold and Silver, Golduck's beak was recolored to light blue.
060		Poliwag	Generation II core series	Spiral is smaller and much thicker.
061		Poliwhirl	Generation II core series	Still has gloves instead of fingerless mitts.
062		Poliwrath	Generation II core series	Still has more than three fingers.
066		Machop	Generation II core series	Still has less than five fingers.
067		Machoke	Generation II core series	The back of the crest is too rounded.
068		Machamp	Generation II core series	Lacks its belt.
076		Golem	Generation II core series	Only has four toes instead of five.
079		Slowpoke	Generation II core series	Originally had a striped underbelly, much like Slowbro, as depicted in the Pocket Monsters Carddass Trading Cards. While the International versions of Silver removed the stripes, the Gold and Crystal sprites were left untouched.
080		Slowbro	Generation II core series	The back of its ears is curled, instead of smooth.
082		Magneton	Generation II core series	Has nine screws instead of seven, just like in Magneton's Red and Blue artwork.
083		Farfetch'd	Generation II core series	Still features the light markings on its wing tips. The Gold sprite also has an incorrect coloration inside of the wings which was later fixed in Crystal.
085		Dodrio	Gold	Lacks the lighter end on its tail feathers. Was later fixed in Crystal.
100		Voltorb	Generation II core series Pokémon TCG 2	Still features the base circle.
101		Electrode	Pokémon TCG Pokémon TCG 2	Still features the base circle.
102		Exeggcute	Crystal	Lacks the face on the back of the cracked egg.
103		Exeggutor	Generation II core series	Still has an extra back head.
106		Hitmonlee	Generation II core series	Still has ankle pads on the wrong side.
110		Weezing	Generation II core series	Head conjunction still differs.
115		Kangaskhan	Generation II core series	Still uses the incorrect toe design.
122		Mr. Mime	Generation II core series	Still has less than five fingers.
124		Jynx	Generation II core series (Ja) Pokémon TCG (Ja) Pokémon TCG 2	The Japanese versions still have Jynx with dark skin, which was changed internationally (and later the Virtual Console versions of the Japanese games).
126		Magmar	Generation II core series	Still has less than five fingers.
127		Pinsir	Gold and Silver (Ja)	The Japanese back sprite has a vertical line down its back instead of a horizontal one, which was changed in the International versions and later Crystal.
128		Tauros	Generation II core series	Its tails are brown instead of gray due to palette limitations.
134		Vaporeon	Crystal	While accurate in Gold and Silver, the back sprite was made off-model in Crystal. Namely, the ruff looks less jagged, is shinier, and connects differently to Vaporeon's neck.
140		Kabuto	Generation II core series	Lacks the eyes on its shell.
141		Kabutops	Silver	Its head protrusions are too rounded, which was corrected in Crystal.
143		Snorlax	Generation II core series	Still has three fingers.
146		Moltres	Generation II core series	Has its wings fully engulfed in flames, like in Moltres' Red and Blue artwork.
152		Chikorita	Gold and Silver	Originally had yellowish skin, as seen in early artwork. Later changed in Crystal.
153		Bayleef	Gold and Silver	Originally had longer neck buds than what could be seen on the back sprite. Later changed in Crystal.
154		Meganium	Generation II core series	In Gold and Silver, the flower has fewer petals, said petals also having a different design. While the front sprite was updated in Crystal, the back sprite wasn't.
156		Quilava	Generation II core series	Gold, Silver, and the back sprite have their eyes entirely red instead of just the irises. While the front sprite was updated in Crystal, the back sprite wasn't.
159		Croconaw	Generation II core series	Body pattern is mirrored. Gold, Silver, and their back sprite have a different crest, which was later changed in Crystal.
160		Feraligatr	Generation II core series	The Japanese Gold and Silver sprites have the underside of the tail white instead of blue. Feraligatr started off with two toes and eight fingers, which was changed to three and five respectively starting in Generation III.
161		Sentret	Generation II core series	Lacks its pawpads.
162		Furret	Gold	Lacks its pawpads.
162		Hoothoot	Generation II core series	Has white eyes instead of red ones.
165		Ledyba	Gold	Originally lacked the segment on its abdomen, which was later added in Crystal.
167		Spinarak	Gold and Silver	Was originally purple instead of green, which was later changed in Crystal.
169		Crobat	Crystal	The blue membrane is visible on the back of the wing, which is only the case with Golbat's wings, not Crobat's.
171		Lanturn	Gold and Silver (Ja)	The Japanese sprites have extraneous yellow cheeks, which was changed in the International versions and later Crystal.
172		Pichu	Gold and Silver (Ja)	The Japanese sprites have collars with two spikes on the front and three on the back instead of the opposite, which was changed in the International versions and later Crystal.
173		Cleffa	Generation II core series	Has an upside-down tail, which stayed the case all the way up to Generation III.
176		Togetic	Generation II core series	Is yellow instead of white, has an odd pattern, as well as a different design for the back of its head. Crystal later went on to change all but the pattern.
177		Natu	Generation II core series	The white and red on the wings is swapped, which was later changed in Crystal.
178		Xatu	Generation II core series	Gold sprite has an extraneous wing spot and missing white body stripes. Silver sprite has a red stomach pattern instead of a black one, and one of its body stripes is black instead of white. The cat eyes on both sprites are also white instead of red. Crystal later changed the front sprite, though the back sprite was oddly left untouched.
179		Mareep	Generation II core series	Has white tail segments on its back sprite instead of yellow ones.
180		Flaaffy	Gold and Silver (Ja)	The Japanese sprites doesn't connect the neck and head wool which was changed in the International versions and later Crystal.
181		Ampharos	Gold and Silver	Originally had a reversed ear pattern, and differently spaced tail stripes. Later changed in Crystal.
185		Sudowoodo	Gold and Silver	Silver sprite has a different spot arrangement. Back sprite has an extra spot which was removed in Crystal.
186		Politoed	Gold and Silver (Ja)	The Japanese sprites have three extraneous back spots, which was changed in the International versions and later Crystal. The animated Crystal sprite mistakenly lacks the yellow marking on the back of Politoed's hands, on top of giving it extraneous claws.
187		Hoppip	Generation II core series	Lacks its pawpads.
190		Aipom	Gold and Silver (Ja)	The Japanese sprites doesn't have the stomach pattern, which was changed in the International versions and later Crystal.
191		Sunkern	Gold and Silver (Ja)	The Japanese back sprite has the middle stripe shorter than the others instead of longer, which was changed in the International versions and later Crystal.
194		Wooper	Gold and Silver (Ja)	The Japanese back sprite has an extraneous dorsal ridge, which was changed in the International versions and later Crystal.
195		Quagsire	Generation II core series	Back sprite has a tail that is too thin and has an extraneous line running down it.
196		Espeon	Generation II core series	Has ears which don't point upwards.
201		Unown	Generation II core series	The W Unown originally had a different shape, looking more like an eye with curly lashes. Crystal later changed the front sprite, though the back sprite was oddly left untouched.
203		Girafarig	Gold and Silver	The Japanese back sprite has the spots connected to the dorsal ridge, which was changed in the International versions and later Crystal. The Gold and Silver front sprites, meanwhile, have less spots, which were also later added in Crytal.
205		Forretress	Gold and Silver	Has a different shell design, with it namely featuring black spots.
207		Gligar	Generation II core series	Has a blue tongue instead of a pink one.
211		Qwilfish	Gold and Silver (Ja)	The Japanese back sprite has an extra tail spot, which was changed in the International versions and later Crystal.
213		Shuckle	Gold and Silver	The back sprite has an extra spot connected to shell rim.
214		Heracross	Generation II core series	The Gold and Crystal sprites lack arm spikes, while the back sprite has visibly duller spikes.
215		Sneasel	Gold and Silver	Originally had brown fur, cyan feathers, longer pupils, a nose, a white forehead spot instead of a gem, and ears with a depression in them. The International sprites tweaked the eyes and ears, and Crystal later changed the rest.
216		Teddiursa	Silver (Ja)	The Japanese Silver sprite lacks the pawpads. Later corrected in the International versions.
217		Ursaring	Generation II core series	Originally had less than five fingers, which stayed the case all the way up to Generation IV.
218		Slugma	Gold and Silver (Ja)	The Japanese sprites have extra lava bubbles on its back, which was changed in the International versions and later Crystal.
219		Magcargo	Gold and Silver	Had a different color scheme, as well as a different shell design. Later changed in Crystal.
220		Swinub	Gold and Silver	Back sprite has stripes which don't connect all the way. Later changed in Crystal.
222		Corsola	Gold and Silver	Back sprite has spots reaching higher up its body.
224		Octillery	Gold and Silver	Has golden eyes instead of white ones.
225		Delibird	Generation II core series	Originally lacked the sideburns. Crystal later changed the front sprite, though the back sprite was oddly left untouched.
226		Mantine	Generation II core series	The Remoraid lacks features such as its horn and flippers. Mantine's back patterns, meanwhile, are either blue or white instead of black due to palette limitations.
227		Skarmory	Gold and Silver	Has a longer beak, one less wing blade, and an extra tail. Later changed in Crystal.
228		Houndour	Generation II core series	Originally had its skull reach further back, which was later changed in Crystal. Front sprites have orange paws, instead of black ones.
232		Donphan	Silver (Ja)	The Japanese Silver sprite has the underside of the trunk gray and striped instead of black and smooth, which was changed in the International versions and later Crystal.
234		Stantler	Generation II core series	The Japanese sprites lack the spots on the hindquarters, which was changed in the International versions and later Crystal. Crystal later changed Stantler's tail to be cream-colored, as seen in its artwork of the time, something which stayed all the way up to Generation IV before reverting back to the brown tail.
235		Smeargle	Generation II core series	Originally had red-colored paint, while its shiny had green-colored one. Starting with Generation III, this would be swapped around.
238		Smoochum	Generation II core series	Originally had rounded hair at the bottom, with droopier wild strands on top of its head.
240		Magby	Gold and Silver	Originally had a different stomach pattern, which was later changed in Crystal.
241		Miltank	Gold and Silver	Originally had a different back pattern, which was later changed in Crystal.
242		Blissey	Silver (Ja)	The Japanese Silver sprite has the right wing not fully covering the shoulder, which was changed in the International versions and later Crystal.
243		Raikou	Gold and Silver	Originally has a different muzzle, no ears, no whiskers, smaller fangs, an orange mane instead of a purple one, and a second, black collar. Was later changed in Crystal.
244		Entei	Gold and Silver	Originally has smoother chest fur and had no sideburns. Was later changed in Crystal.
245		Suicune	Generation II core series	Back sprite has a blue chin instead of a white one, which was mistakenly added on the Crystal front sprite.
247		Pupitar	Gold and Silver (Ja)	The Japanese back sprite has an additional body segment, which was changed in the International versions and later Crystal.
248		Tyranitar	Generation II core series	Has an inconsistent toe design, with Tyranitar's right foot having a much larger, rounded claw, as reflected in its footprint. Starting in Generation III, Tyranitar now has three similarly-sized triangular claws, with its footprint updated accordingly.

Generation III

Pokémon			Game	Reason
003		Venusaur	Generation III core series	Still only has five petals instead of six.
009		Blastoise	Generation III core series	Still has a different cannon cover design. Later changed in FireRed and LeafGreen, though only the back sprite.
011		Metapod	Ruby and Sapphire Emerald	Still has an extraneous line connecting its eyes. Later changed in FireRed and LeafGreen.
020		Raticate	Ruby and Sapphire Emerald	Still has more than three fingers. Later changed in FireRed and LeafGreen.
031		Nidoqueen	Generation III core series	Is still shown with two fangs here.
035		Clefairy	Generation III core series	Still has an upside-down tail.
040		Wigglytuff	Ruby and Sapphire Emerald	Eartips are pink instead of white. Later changed in FireRed and LeafGreen.
060		Poliwag	Generation III core series	Spiral is still too small and thick.
061		Poliwhirl	Ruby and Sapphire	Still has gloves instead of fingerless mitts. Later changed in FireRed and LeafGreen.
062		Poliwrath	Ruby and Sapphire	Still has more than three fingers. Later changed in FireRed and LeafGreen.
068		Machamp	Generation III core series	Lacks its belt.
068		Golem	Generation III core series	Still only has four toes.
082		Magneton	Generation III core series Pokémon Pinball: Ruby & Sapphire	Still has nine screws, instead of seven.
083		Farfetch'd	Generation III core series	Still has its wing pattern. Later changed in FireRed and LeafGreen, though the back sprite was oddly left untouched.
084		Doduo	FireRed and LeafGreen	Appears to be missing a talon, only having three instead of four.
093		Haunter	Generation III core series	Is still depicted with more than three fingers.
094		Gengar	FireRed and LeafGreen	The spikes on its back aren't connected and have a different shape. This is reflected in the games' intro as well.
100		Voltorb	Pokémon Pinball: Ruby & Sapphire	Still has a base circle.
103		Exeggutor	Ruby and Sapphire Emerald	Still has an extra back head. Later changed in FireRed and LeafGreen.
110		Weezing	Ruby and Sapphire Emerald	Still has a different head head conjunction. Later changed in FireRed and LeafGreen.
115		Kangaskhan	FireRed and LeafGreen	The space below its pouch is brown instead of cream.
122		Mr. Mime	Ruby and Sapphire	Still has less than five fingers. Later changed in FireRed and LeafGreen.
126		Magmar	Generation III core series	Still has less than five fingers.
128		Tauros	Ruby and Sapphire Emerald	Still has brown tails instead of gray ones. Later changed in FireRed and LeafGreen.
143		Snorlax	Ruby and Sapphire FireRed and LeafGreen	Still has three fingers. Later changed in Emerald.
217		Ursaring	Generation III core series	Still has less than five fingers.
226		Mantine	Generation III core series	The Remoraid lacks features such as its horn and flippers.
234		Stantler	Generation III core series	Still has a cream-colored tail instead of a brown one.
250		Lugia	Generation III core series	Spikes are black instead of blue, as seen in Lugia's Gold and Silver artwork.
266		Silcoon	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has a yellow iris instead of a red one. Worth noting is that the eyes do look more orange-ish when playing on original hardware.
268		Cascoon	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has a yellow pupil instead of a white one.
269		Dustox	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has a single crescent-like wing instead of two separate wings. Later changed in Emerald. Additionally, its tail is colored red instead of purple.
272		Ludicolo	Generation III core series	The stem sprouting from its hat is missing its stripes.
273		Seedot	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has a light green cap instead of dark gray one. Worth noting is that the cap does look more gray-ish when playing on original hardware.
280		Ralts	Generation III core series	Has a smaller back horn.
284		Masquerain	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has a darker face, and wings that are orange/brown instead of pink/purple.
292		Shedinja	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has a brown abdomen instead of a grey one, as well as a more ethereal aureola.
298		Azurill	Generation III core series	Has a misshapen tail.
299		Nosepass	Generation III core series	Has a thinner, less refined body, as well as red pawpads instead of black ones.
301		Delcatty	Generation III core series	Originally had a full-moon symbol on its forehead.
304		Aron	Generation III core series	The back of its head is rounded instead of flat.
309		Electrike	Generation III core series	Front sprites have smaller leg spikes, while the back sprite lacks them altogether.
310		Manectric	Generation III core series	Back sprite lacks the ear hole.
325		Spoink	Generation III core series Pokémon Pinball: Ruby & Sapphire	Its pearl is cream-colored, instead of pink. The back sprite has no cheek pattern.
326		Grumpig	Generation III core series	Back sprite has a different ear design.
335		Zangoose	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has purple claws instead of black ones.
353		Shuppet	Generation III core series Pokémon Pinball: Ruby & Sapphire	Has green irises instead of dark blue ones.
356		Dusclops	Generation III core series	Only has four fingers, instead of five.
361		Snorunt	Pokémon Pinball: Ruby & Sapphire	Animated Pinball sprite lacks the back spots.
366		Clamperl	Generation III core series	Back sprite has a different shell design.
375		Metang	Generation III core series	The top of the body is different, namely not being flat. The back sprite also features two extraneous holes.
377		Regirock	Generation III core series	The shoulder pads are smaller.
379		Registeel	Generation III core series Pokémon Pinball: Ruby & Sapphire	The shoulder pads reach higher up.
384		Rayquaza	Generation III core series	The inside of its mouth is blue instead of pink.
386		Deoxys (Normal Forme)	Generation III core series	Originally only had four fingers. Back sprite also has blue spots instead of green, which was later changed in Emerald.

Generation IV

Pokémon			Game	Reason
084		Doduo	HeartGold and SoulSilver	Uses the old talon arrangement, with three talons in the front and one in the back.
094		Gengar	Diamond and Pearl	Retains the off-model back spikes design from FireRed and LeafGreen. Later fixed in Platinum.
110		Weezing	Diamond and Pearl Platinum	Still has a different head conjunction. Later fixed in HeartGold and SoulSilver, though it returned in Black and White.
115		Kangaskhan	Diamond and Pearl Platinum	Still has the underside of its pouch be the wrong color. Later fixed in HeartGold and SoulSilver.
127		Pinsir	Diamond and Pearl	Only has one body segment. Later fixed in Platinum.
175		Togepi (Shiny)	Diamond and Pearl	Has an incorrectly colored shell pattern. Later fixed in Platinum.
217		Ursaring	Diamond and Pearl Platinum	Still has less than five fingers. Later fixed in HeartGold and SoulSilver.
350		Milotic (female Shiny)	Japanese Platinum	Antennas are incorrectly coloured blue. Later fixed in international versions of Platinum.
380		Latias (Shiny)	Diamond and Pearl	Has golden eyes instead of green ones. Later fixed in Platinum.

Generation V

Pokémon			Game	Reason
024		Arbok	Generation V core series	Lacks a tail segment when compared to its back sprite.
080		Slowbro	Generation V core series	As seen in the animated sprite, the Shellder is missing an eye.
110		Weezing	Generation V core series	This sprite is based on the off-model Diamond, Pearl, and Platinum sprite.
024		Marowak	Generation V core series	The hand holding the bone changes between the front and back sprites.
555		Darmanitan (Zen Mode)	Generation V core series	Lacks its back stripes.
599		Klink	Generation V core series	The back sprite has the upper gear on the wrong side.
600		Klang	Generation V core series	The back sprite has the smaller gear on the wrong side.
601		Klinklang	Generation V core series	The back sprite has the smaller gear on the wrong side.