of the Pokémon series
Arbitrary code execution (template, remote, cart-swap, unintended ROM code execution) | 2x2 block encounter glitches (Left-facing shore tile glitch (in-game trade shore encounter trick, old man trick, Trade link up shore encounter trick, Fight Safari Zone Pokémon trick)) | 99 item stack glitch | Bad clone glitch (????? party overloading (Type 0xD0 move glitch, ????? map corruption, | Celebi trick, Celebi Egg trick, Shiny Celebi trick, glitch move map corruption, overloaded party map corruption, Glitch Unown (Glitch Unown map corruption) Duplicate key items glitch (infinite items and item creation, expanded Balls pocket (TM/HMs outside of the TM/HM pocket, Glitch Pokédex categories)) | Berry glitch | Bug-Catching Contest data copy glitch (Japan only) | Cloning | Ditto DV manipulation | Elite Four door glitch (Japan only) | Expanded party encounter table manipulation | Glitch City (Safari Zone exit glitch, RAM manipulation) | Glitch meta-map script activation (Generation I) | Infinite Master Balls (Colosseum) | Large storage box byte shift glitch (storage box remaining HP glitch, maximum stat glitch) | Item duplication glitch | Item stack duplication glitch (Generation I expanded items pack (Glitch Rocket HQ maps, Map FE (English and non-English European Yellow), Map script pointer manipulation (arbitrary code execution, map script pointer item ball manipulation), Text pointer manipulation (arbitrary code execution, item ball manipulation, mart buffer overflow), Trainerless instant encounter glitch) | Transform held item glitch (Japan only) | Mimic glitch (Japan only) | Out of bounds Glitch City (Generation II) (Slowpoke Well out of bounds corruption (French version)) Lumiose City save glitch | Pikachu off-screen glitch (Trainer corruption glitch) | Pokémon merge glitch | Pomeg glitch (Pomeg data corruption glitch) | Roaming Pokémon encounter glitch | (Mimic) Transform Rage glitch | Select glitches (Japan only) (Closed menu: Dokokashira door glitch (international), Fossil conversion glitch (international), Second type glitch, Skip to Level 100 glitch, Trainer mutation glitch, walk through walls (international) Special menu: Lift glitch, Badge describer glitch) | Sketch glitch | SRAM glitch (Generation I) (255 Pokémon glitch, send party Pokémon to a new game) | Surf down glitch (Grass/rock Surfing glitch (Spanish/Italian only) (English)) | Time Capsule exploit | SRAM glitches (Generation II) (Mailbox glitches, Mystery Gift item corruption, Trainer House glitches) | Tweaking | Trainer escape glitch (Death-warp, Mew Trick, Ditto Trick, Experience underflow glitch) | Buffer overflow techniques (Japanese unterminated name glitch item instant encounter glitch, LOL glitch, Rival LOL glitch, Instant LOL glitch, RAM LOL glitch, oobLG, blockoobLG, Instant encounter infinite chain glitch (LGFly)), Super Glitch (Generation I) (party remaining HP glitch), Super Glitch (Generation III), Text pointer manipulation mart buffer overflow glitch, CoolTrainer♀-type move, Double distort CoolTrainer♀ corruption, Yami Shop glitch) | Walk through walls (ledge method, museum guy method, Rival's effect, Select glitch method (international), Brock Through Walls) | ZZAZZ glitch (party Pokémon box data shift glitch)
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A Shiny Celebi at level 93 obtained with the glitch.
The Shiny Celebi trick is an adaption of the bad clone glitch discovered by Paco81 for obtaining a stable Shiny Celebi in Pokémon Gold, Silver and Pokémon Crystal, put together by gia and originally documented in a three-part 2009 video.
It allows the player to obtain a Shiny Celebi by using a Pokémon that has exactly 251 happiness, a "wall" (a Pokémon with 255 happiness to block corruptions beyond it) and a "donor" which will give specific DVs to the end result based on its species and held item (such as Growlithe; 3A holding a Polkadot Bow; AA).
This trick is an elaborate byte shift exploit, where depositing a Pokémon above the future Celebi causes data to shift up one byte.
1) Get bad clone ready in the storage box. To get one you should deposit more Pokémon than you have ever deposited in a box (and at least 5 or so), then change boxes and reset the game shortly after the Yes/No box disappears (Gold/Silver) or after SAVING... DON'T TURN OFF THE POWER. is fully printed (Crystal). Getting a bad clone is normally difficult but Pokémon Stadium 2's Game Boy Tower makes it a lot easier if you reset the game after the "Saving..." message appears at one of the aforementioned moments.
2) Catch Rattata ("CELEBI" or nickname you choose for Celebi) in Friend Ball.
3) Put "CELEBI" to sleep with Drowzee's Hypnosis on Route 34.
4) Give "CELEBI" 28 vitamins (e.g. 10 Protein, 10 Iron, 8 Carbos), a Heal Powder and three more vitamins to give it 251 happiness (should be done just before withdrawing over 7 Pokémon begins).
5) Catch another Pokémon in a Friend Ball for it to have 200 happiness and max out its happiness to 255 with 28 vitamins, call it "wall".
6) Catch a Growlithe and give it Polkadot Bow, call it "donor". (These are for the DVs 3A, AA; which enable Shininess).
7) Your Trainer ID must not have a FF value when converted into hexadecimal from decimal. You can convert it using Windows Calculator. Furthermore, there must be no Pokémon with DVs of Attack/Defense DVs or Speed/Special DVs of 15, 15 (hex:FF) or any other FF value.
Bulk of the glitch
Step 1: The party should be ordered as followed: Bad clone, donor, wall, victim, CELEBI, victim.
Step 2: Add Pokémon to top of party with move w/o mail (nicknamed and referred to in this guide as "GOLD").
Step 3: The party should be ordered as followed: 'GOLD', victim, 'CELEBI', donor, wall, bad clone, victim.
Step 4: Deposit top Pokémon x2, with donor as last Pokémon deposited (basically three deposits).
Step 5: Use move PkMn w/o mail to move wall above CELEBI.
Step 6: Three Pokémon to the top with move w/o mail (corrupted name, two Pokémon, wall, CELEBI, cancel).
Step 7: Select CELEBI and move with wall with move w/o mail (don't select wall) so that CELEBI above wall.
Step 8: With CELEBI in front (Poké 4), deposit three times again.
Step 9: Use move PkMn w/o mail to swap CELEBI with wall (line directly above cancel).
Step 10: Add three Pokémon to the top of the party using move w/o mail.
Step 11: Swap CELEBI one spot above wall.
Step 12: Deposit top three Pokémon.
Step 13: Move CELEBI with wall (move w/o mail).
Step 14: Move 3 Pokémon in at top.
Step 15: Move CELEBI with wall.
Step 16: Deposit top three Pokémon.
Step 17: Move CELEBI with wall (move w/o mail).
Step 18: Move 3 Pokémon in at top.
Step 19: Move CELEBI with wall.
Step 20: Deposit top three Pokémon.
Step 21: Move CELEBI with wall.
Step 22: Move 3 Pokémon in at top.
Step 23: Move CELEBI with wall.
Step 24: Deposit top three Pokémon.
Step 25: Move CELEBI with wall (move w/o mail).
Step 26: Move 3 Pokémon in at top.
Step 27: Move CELEBI with wall.
Step 28: Deposit top three Pokémon.
Step 29: Move CELEBI with wall.
Step 30: Move 3 Pokémon in at top.
Step 31: Move CELEBI with wall.
Step 32: Deposit top three Pokémon.
Step 33: Move CELEBI with wall.
Step 34: Move 3 Pokémon in at top.
Step 35: Move CELEBI with wall.
Step 36: Deposit top three Pokémon.
Step 37: Take CELEBI into the Day Care and out and it will become a Shiny Celebi.
Why the donor works for making a Pokémon Shiny
In Generation II a Pokémon's Shininess is determined by its DVs. The byte 3A in the donor means an Attack DV of 3 and a Defense DV of 10. The byte AA means Speed and Special DVs of 10. These DVs are that of a Shiny Pokémon (a Shiny must have 10 Defense, Speed and Special DVs as well as 2, 3, 6, 7, 10, 11, 14, or 15 Attack DVs). Hence for maximum DVs on the future Shiny Pokémon a Ho-Oh (hex: FA) holding a Polkadot Bow could theoretically be used as the donor instead.