Time Capsule exploit

The Johto guard glitch is a glitch in Gold, Silver, and Crystal which allows players to trade a Generation II Pokémon into a Generation I game as an equivalent glitch Pokémon or Generation I Pokémon by using a ????? (index number 255).

A ????? (index number 255) can be obtained by using the Celebi Egg glitch and having the Pokémon Day Care on Route 34 raise an obtained ????? (index number 000) 'bad clone'. After withdrawing it, the ????? (index number 000) 'reverts' back into a ????? (index number 255).

Hiding Generation II Pokémon

This glitch takes advantage of ????? (index number 255)'s 'cloaking' abilities. If the ????? (index number 255) is switched above a Generation II Pokémon, it is possible to bring Generation II Pokémon into the Time Capsule, as long as each Generation II Pokémon in the party is hidden below the ????? because Pokémon below it are temporarily regarded as being of index number 000 and ????? (index number 000) is not considered as a Generation II Pokémon by the game. As such, Pokémon below the ????? (index number 255) will be regarded as an 'M (00) in Red and Blue, or a 3TrainerPoké $ in Pokémon Yellow.

However, the game will still block the Pokémon if it has any moves which originated from Generation II even if ????? (index number 255) is above it, so any moves which originated from Generation II must still be removed by the Move Deleter if they are known by a Pokémon to be hidden by the ????? (index number 255).

Applications

The glitch is useful for obtaining glitch Pokémon, and can be used to obtain almost any glitch Pokémon in Generation I, including glitch Pokémon previously unobtainable via the Ditto glitch and old man glitch because of a procedure where an equivalent Trainer class is fought if glitch Pokémon with index numbers of 200 and above are battled in the wild.

Reverting 'M (00)/3TrainerPoké $ into an equivalent species

If the ????? (index number 255) is switched back underneath the Generation II Pokémon after entering the Time Capsule, its original species is restored, meaning that Generation II Pokémon can be taken into the Time Capsule.

If the Pokémon is traded as an 'M (00) or 3TrainerPoké $, it is actually an unstable hybrid of 'M (00) or 3TrainerPoké $ and the actual glitch Pokémon, with the actual Pokémon as the recipient and the 'M (00) or 3TrainerPoké $ as the donor. To stabilize an unstable hybrid Pokémon, a Pokémon can be evolved (in the way the recipient would), traded to Pokémon Stadium 2, or deposited and withdrawn from Pokémon Day Care. A stabilized hybrid will be the species and level of the recipient Pokémon (or its evolved form if it was evolved), but have the stats, nickname, and moves of the donor. Once stabilized, the Pokémon can be traded to the Generation II games.

Since Generation II Pokémon do not exist in Generation I, the received Generation I Pokémon is determined by a conversion table for index numbers 1-250 which is hard-coded into the ROM of Gold, Silver, and Crystal. It is currently unknown what determines the equivalent Pokémon in Generation I for a Generation II Pokémon with index numbers 000 and 251-255 because the equivalent Generation I Pokémon is no longer consistent on the species for these Pokémon.

Conversion

Generation II Generation I Hex Pokémon Hex PokémonRB PokémonY 98 Chikorita BF ▶ A 4 4 99 Bayleef C0 a 4!4=Hy 9A Meganium C1 ゥ (C1) ♀ . 9B Cyndaquil C2 ゥ .4 PPKMNp' ' 9C Quilava C3 h POKé ゥ ( Z4 9D Typhlosion C4 PokéWTrainer X ゥ- xゥ, 9E Totodile C5 PKMN 4. . 9F Croconaw C6 ゥL ゥM 4 7g A0 Feraligatr C7 ♀Pゥ ゥゥT u A1 Sentret C8 ゥU? g g A2 Furret C9 ◣ゥ 8 ァ / g J 1 A3 Hoothoot CA PC4SH Glitch (CA) A4 Noctowl CB p . pゥ A5 Ledyba CC PKMN ◣ n .8 A6 Ledian CD Trainer ゥ. B A7 Spinarak CE ▼ W G d PKMN A8 Ariados CF OPkMn4X 4, ゥァ (CF) A9 Crobat D0 PKMN PKMN T ゥ' AA Chinchou D1 4B 8 4 8 B ァ h AB Lanturn D2 ゥ ' PKMN AC Pichu D3 M p'u ゥ ゥゥ) AD Cleffa D4 Aゥ G ゥ (D4) AE Igglybuff D5 Pゥ ゥ ゥ 'ゥ. AF Togepi D6 4h PKMN pゥぁ ゥぇ B0 Togetic D7 Glitch (D7) PKMNp B1 Natu D8 PKMNaPKMNゥ ♂ fPKMNk PKMN B2 Xatu D9 PKMNRPKMN " ゥ (D9) B3 Mareep DA B (DA) ] B4 Flaaffy DB Glitch (DB) ゥ' B B5 Ampharos DC Glitch (DC) PKMN B6 Bellossom DD 7PKMN'v 4, ゥァ (DD) B7 Marill DE -PKMN 8 (DE) B8 Azumarill DF .PKMN p ID B9 Sudowoodo E0 /PKMN ▼PKMN 8 P ァ BA Politoed E1 'v 'r 'r 4 BB Hoppip E2 …… (h4to89 BC Skiploom E3 ゥ (E3) 4HI 89 4to BD Jumpluff E4 Glitch (E4) 8B 4 8 BE Aipom E5 C Z ゥ BF Sunkern E6 - - 9 C0 Sunflora E7 Pゥ 4$ ゥHIゥ. C1 Yanma E8 X:LC 4(h4hi?$ C2 Wooper E9 c 4HI? C3 Quagsire EA A (EA) 'r ゥ C4 Espeon EB Glitch (EB) $ Pゥ. 4( C5 Umbreon EC Glitch (EC) ?/ C6 Murkrow ED hゥ 4(h4? C7 Slowking EE .g ゥ► ゥ▼ ゥ C8 Misdreavus EF ゥ$'M h 4Pゥ ゥ... C9 Unown F0 ゥ$ (F0) . ゥ ( .I' . CA Wobbuffet F1 94 ' B' ゥ CB Girafarig F2 ゥ l (F2) ゥ ゥェ ゥ ▷ CC Pineco F3 ゥ l (F3) ゥ $ A (F3) CD Forretress F4 ゥ$ (F4) ♂ p ゥ CE Dunsparce F5 Glitch (F5) ▼ pゥ CF Gligar F6 G'Mp ゥ $ A (F6) D0 Steelix F7 'Ng'Mp PKMN D1 Snubbull F8 'Ng ゥ$ ゥ 4ぁ 4 D2 Granbull F9 94 h $ D3 Qwilfish FA Glitch (FA) ゥ▾ ゥ♂ D4 Scizor 1F Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) D5 Shuckle 20 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) D6 Heracross 32 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) D7 Sneasel 38 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) D8 Teddiursa 3D Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) D9 Ursaring 3E Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) DA Slugma 3F Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) DB Magcargo 43 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) DC Swinub 44 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) DD Piloswine 45 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) DE Corsola 4F Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) DF Remoraid 50 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E0 Octillery 51 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E1 Delibird 56 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E2 Mantine 57 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E3 Skarmory 5E Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E4 Houndour 5F Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E5 Houndoom 73 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E6 Kingdra 79 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E7 Phanpy 7A Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E8 Donphan 7F Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) E9 Porygon2 86 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) EA Stantler 87 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) EB Smeargle 89 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) EC Tyrogue 8C Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) ED Hitmontop 92 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) EE Smoochum 9C Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) EF Elekid 9F Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F0 Magby A0 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F1 Miltank A1 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F2 Blissey A2 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F3 Raikou AC Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F4 Entei AE Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F5 Suicune AF Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F6 Larvitar B5 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form) F7 Pupitar B6 Missingno. (Kabutops form) Missingno. (Yellow B6 variant) F8 Tyranitar B7 Missingno. (Aerodactyl Fossil form) Missingno. (Yellow B7 variant) F9 Lugia B8 Missingno. (Ghost form) Missingno. (Yellow B8 variant) FA Ho-Oh 34 Missingno. (Red and Blue normal form) Missingno. (Yellow normal form)

Video

By ChickasaurusGL

This video is not available on Bulbapedia; instead, you can watch the video on YouTube here.

History

Before a method was found of obtaining a ????? (index number 255) without cheating, the idea of using a ????? to bypass a Generation II Pokémon in to the Time Capsule was proposed on TRsRockin's forums, but was never fully investigated until Paco81's discovery of the Celebi Egg glitch on Glitch City Laboratories.

Glitches in the Pokémon games Multiple generations Transform glitches • Glitch Trainers • Cloning glitches • Error messages • Arbitrary code execution Generation I Glitches • Battle glitches • Overworld glitches -- • 0 ERROR • Broken hidden items • Cable Club escape glitch • Dual-type damage misinformation Experience underflow glitch • Fight Safari Zone Pokémon trick • Glitch City • Item duplication glitch • Item underflow Mew glitch • Old man glitch • Pewter Gym skip glitch • Pokémon merge glitch • Rhydon glitch • Rival twins glitch Select glitches (dokokashira door glitch, second type glitch) • Super Glitch Time Capsule exploit • Walking through walls • ZZAZZ glitch Generation II Glitches • Battle glitches Bug-Catching Contest glitch • Celebi Egg glitch • Coin Case glitches • Experience underflow glitch Glitch dimension • Glitch Egg • Teru-sama • Time Capsule exploit • Trainer House glitches • GS Ball mail glitch Generation III Glitches • Battle glitches • Overworld glitches Berry glitch • Dive glitch • Pomeg glitch • Glitzer Popping Generation IV Glitches • Battle glitches • Overworld glitches Acid rain • GTS glitches • Pomeg glitch • Rage glitch Surf glitch • Tweaking • Pal Park Retire glitch Generation V Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Frozen Zoroark glitch • Sky Drop glitch Generation VI Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Lumiose City save glitch • Symbiosis Eject Button glitch • Toxic sure-hit glitch Generation VII Glitches • Battle glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Toxic sure-hit glitch • Rollout storage glitch Generation VIII Glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Toxic sure-hit glitch • Rollout storage glitch • Party item offset glitch Generation IX Glitches Glitch effects Game freeze • Glitch battle • Glitch song Gen I only: Glitch screen • TMTRAINER effect • Inverted sprite Gen II only: Glitch dimension Lists Glitches (GO • Mystery Dungeon • TCG GB • Spin-off) Glitch Pokémon (Gen I • Gen II • Gen III • Gen IV • Gen V • Gen VI • Gen VII • Gen VIII) Glitch moves (Gen I) • Glitch types (Gen I • Gen II)

This article is part of Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games.