Glitch Unown

Major glitches of the Pokémon series

Arbitrary code execution

0x1500 control code arbitrary code execution (Crystal) | Cart-swap arbitrary code execution | Generation I custom map script pointer | Generation I invalid meta-map scripts | Generation I item ("8F", "ws m", "-g m", "5かい", "てへ" etc.) | Generation I move ("-", "TM42") | Generation I Trainer escape glitch text boxes | Generation II bad clone | Generation II Burned Tower Silver | Japanese Crystal Pokémon Communication Center SRAM glitches | Coin Case glitch | Generation II glitch Pokédex sortings | Pikachu off-screen glitch ACE | OAM DMA hijacking | Pikachu glitch emote | Generation III glitch Pokémon summary | Generation III glitch move animation) | Remote code execution | TM/HMs outside of the TM/HM pocket | ZZAZZ glitch Trainer FC

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No further extensions

Cloning | Item duplication glitch (Generation I) | Pokémon merge glitch ("Q Glitch", Generation I) | Time Capsule exploit | Bug-Catching Contest data copy glitch (Generation II, Japan only) | Berry glitch | Battle Tower Lati@s glitch (Generation III) | (Mimic) Transform Rage glitch (Generation IV)

Transform held item glitch (Generation IV, Japan only) | Mimic glitch (Generation IV, Japan only)

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Buffer overflow techniques

99 item stack glitch | LOL glitch | Rival LOL glitch | Instant LOL glitch | RAM LOL glitch | Out of bounds LOL glitch | 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 | Party Pokémon box data shift glitch | Unterminated name glitch item instant encounter (Japanese Red/Green)

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Item stack duplication glitch (Generation I)

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

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Bad clone glitch (Generation II)

????? 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 (Wrong pocket TM/HMs, Glitch Pokédex categories))

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Closed menu Select glitches (Japanese Red/Green)

Dokokashira door glitch (International) | Fossil conversion glitch (international) | Second type glitch | Skip to Level 100 glitch | Trainer mutation glitch | Walk through walls (International) | Lift glitch | Badge describer glitch

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Pomeg glitch (Generation III)

Pomeg data corruption glitch ("Glitzer Popping") | Charm glitch

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Voiding (Generation IV)

Tweaking

Broken escalator glitch (Japan only) | Elite Four door glitch (Japan only)

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2x2 block encounter glitches (Generation I)

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) | Viridian Forest no encounter grass tiles glitch

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Glitch City

Safari Zone exit glitch | RAM manipulation | Out of bounds Glitch City (Generation II) | Slowpoke Well out of bounds corruption (French Gold/Silver/Crystal)

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Large storage box byte shift glitch

Storage box remaining HP glitch | Generation I max stat trick

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Pikachu off-screen glitch

Trainer corruption glitch

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SRAM glitches

Generation I save corruption | 255 Pokémon glitch | Expanded party encounter table manipulation (Generation I) | Send party Pokémon to a new game (Generation I) | Generation II save corruption | Mailbox glitches | Mystery Gift item corruption | Trainer House glitches

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Trainer escape glitch

Death-warp | Ditto trick | Experience underflow glitch | Mew trick | Text box ID matching | Meta-map script activation

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Walk through walls

Ledge method | Museum guy method | Rival's effect | Select glitch method (International Select glitch method), Brock Through Walls

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Surf down glitch

Grass/rock Surfing glitch (Spanish/Italian only) (adaptions: Submerge glitch (international)) | 8 8 (0x7C) grass/rock surfing glitch (English Red/Blue))

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PRAMA Initiative a également une page sur Glitch Unown.

Glitch Unown are invalid Unown in Pokémon Gold, Silver and Crystal that can only be found in Unown Mode of the Pokédex through glitching or hacking.

They cannot exist as usable Pokémon, because every set of DVs counts as a valid Unown letter.^{[citation needed]}

Some variants of these glitch Pokémon have indecipherable sprites, kind of like glitch Pokémon from Generation I. Others such as the Gold/Silver:254 kind use a sprite that shows all Unown icons from A-Y in five columns, in a 'down, then next column' order. Other glitch Unown are a combination of both of the possible appearances explained above.

Many of the glitch Unown cannot be seen as they either freeze the game, or reset it into a Glitch Dimension.

Glitch Unown are different between Gold/Silver and Crystal.

In Pokémon Crystal, at least the hex:FB glitch Unown has a sprite that looks like a corrupted version of another Pokémon's sprite (i.e. Noctowl for FB).

A notable glitch caused by a glitch Unown is Ilsty and ?. The game will switch to the evolution screen and act like a Pokémon named "Ilsty" is evolving into a Forretress, and then have a Graveler named "?" evolve into Golem.

Obtaining Glitch Unown

Glitch Unown can be obtained in Gold/Silver with ????? party overloading or through cheating.

Withdraw over 6 Pokémon method

Note: This has only been confirmed in Gold/Silver.

First prepare at least Pokémon five boxed Pokémon, and a full party with the fifth party Pokémon having a Defense modulo 256 byte (DB13) of your choice. Both the party Pokémon and the boxed Pokémon should be nonvaluable.

• Using Coin Case arbitrary code execution or the Celebi Trick, obtain a ????? (hex:00 or hex:FF only).
• Get six party Pokémon, then via "Move PkMn W/O Mail" withdraw five more Pokémon, placing them in the first position each time.

The value from DB13 will be written to the first Unown in the UnownDex, but the player's Pokédex seen and own addresses will be corrupted, causing the player to end up with different Pokédex in the Pokédex, so a player should not do this glitch if they have a complete Pokédex and don't want to lose it.

Cheating method

The GameShark code 01xx24DC (Pokémon Gold/Silver) or 01xxD9DE (Pokémon Crystal) will replace the first Unown in the Pokédex's Unown Mode.

Gallery (Pokémon Gold and Silver)

• 

  A glitch Unown with a blank appearance and a hexadecimal identifier of FD (dec:253).

• 

  A glitch Unown with a sprite that shows all Unown icons from A-Y in five columns, in a 'down, then next column' order. Hexadecimal identifier FE (dec: 254).

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  Some of the glitch Unown look kind of like certain glitch Pokémon in Red, Blue and Yellow. This glitch Unown has a hexadecimal identifier of FC (dec: 252).

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  Some of the glitch Unown look similar to both Unown with a hexadecimal identifier of hex:FD (dec: 253) and hex:FC (dec: 252).

Gallery (Pokémon Crystal)

• A glitch Unown with a blank appearance in Pokémon Crystal. It has a hexadecimal identifier of FF (dec: 255)

  A glitch Unown with a blank appearance in Pokémon Crystal. It has a hexadecimal identifier of FF (dec: 255)

• This glitch Unown has a hexadecimal identifier of FE (dec:254). Black and white vertical 'pipes' can be seen.

  This glitch Unown has a hexadecimal identifier of FE (dec:254). Black and white vertical 'pipes' can be seen.

• A glitch Unown with a hexadecimal identifier of FC (dec:252). Black and white vertical 'pipes' can be seen like FE (dec:254) but the overall shape is centered and like a square.

  A glitch Unown with a hexadecimal identifier of FC (dec:252). Black and white vertical 'pipes' can be seen like FE (dec:254) but the overall shape is centered and like a square.

• A glitch Unown with a hexadecimal identifier of FB (dec:251). It incorporates parts of Noctowl's sprite.

  A glitch Unown with a hexadecimal identifier of FB (dec:251). It incorporates parts of Noctowl's sprite.

See also

1. Ilsty and ?
2. UnownDex