Version-exclusive Pokémon
Version-exclusive Pokémon are Pokémon that are missing from one or more games in a single Generation to encourage trading between multiple players. For instance, in the original Pokémon Red, Bellsprout was absent but appeared in Pokémon Blue. Version-exclusive Pokémon usually complement each other in design, type, as well as location of appearance in the wild.
Below is a list of Pokémon exclusive to games. This list does not take note of Pokémon exclusive between Generation III Kanto and Hoenn games, simply because there are too many Pokémon that are native to each individual region to list; a better indicator of those Pokémon which are missing from each region would be the Kanto Dex and Hoenn Dex. However, even this does not take Generation II Pokémon into account, since the vast majority thereof is only listed in the National Dex of those games. Furthermore, a list of Pokémon missing from the Generation III GameCube games, Pokémon Colosseum and XD, is far too long to be included in this context.
Take note that the Pokémon listed below are missing from that particular game, and will need to be traded from a game within the same generation that does not list them. Therefore, Pokémon obtainable in Generation II by trading with Generation I, Pokémon obtainable in Generation IV by utilizing GBA games, and finally - legendary Pokémon that require attending promotional events, are all excluded from the following list.
It is of relevant note that in Pokémon Diamond and Pearl, most of the version exclusives of the GBA games can be caught in the wild by inserting one of the GBA games into the DS. In Pokémon XD, the seven Emerald-absent Pokémon are all obtainable, thus eliminating the need in trading with either Pokémon Ruby or Sapphire (previously, both were required).
Generation I
Generation II
Generation III
Hoenn
Kanto
Generation IV
| Pokémon Pearl | Pokémon Diamond | |||
|---|---|---|---|---|
|
File:086MS.gif File:087MS.gif Seel and Dewgong | |||
| File:127MS.gif Pinsir |
File:123MS.gif File:212MS.gif Scyther and Scizor | |||
File:200MS.gif  Misdreavus and Mismagius |
File:198MS.gif  Murkrow and Honchkrow | |||
| File:234MS.gif Stantler |
File:352MS.gif Kecleon | |||
| File:371MS.gif File:372MS.gif File:373MS.gif Bagon, Shelgon and Salamence |
File:246MS.gif File:247MS.gif File:248MS.gif Larvitar, Pupitar and Tyranitar | |||
| File:228MS.gif File:229MS.gif Houndour and Houndoom |
File:261MS.gif File:262MS.gif Poochyena and Mightyena | |||
| File:363MS.gif File:364MS.gif File:365MS.gif Spheal, Sealeo and Walrein |
File:304MS.gif File:305MS.gif File:306MS.gif Aron, Lairon and Aggron | |||
  Shieldon and Bastiodon |
  Cranidos and Rampardos | |||
  Glameow and Purugly |
  Stunky and Skuntank | |||
 Palkia |
 Dialga |
Pokémon Mystery Dungeon
As trading is not possible between these games, the listed Pokémon will appear in the wild only when a rescue mission involving the Pokémon is completed. This requires a wonder mail code from the alternate version, in which the Pokémon is normally found.
Red and Blue
| Red Rescue Team | Blue Rescue Team |
|---|---|
| File:129MS.gif File:130MS.gif Magikarp and Gyarados |
File:349MS.gif File:350MS.gif Feebas and Milotic |
| File:131MS.gif Lapras |
File:226MS.gif Mantine |
| File:190MS.gif Aipom |
File:315MS.gif Roselia |
| File:233MS.gif Porygon2 |
File:137MS.gif Porygon |
| File:312MS.gif Minun |
File:311MS.gif Plusle |
Time and Darkness
| Time Expedition Team | Darkness Expedition Team |
|---|---|
| File:150MS.gif Mewtwo |
File:251MS.gif Celebi |
 Burmy |
 Combee |
  Buneary and Lopunny |
  Riolu and Lucario |
 Rotom |
 Pachirisu |
