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????? (FC) Generation II glitch Egg (Gold/Silver) (FD) ????? (FE)

Please note that some of the data described here may not be fully reliable if it depends on the contents of writable memory, such as RAM; WRAM; SRAM.


Gold: Silver:
Bulbapedia link Glitch Egg
Equivalent glitch Pokémon EGG (Crystal)
Equivalent Pokémon (Generation I) (Varies, hard to predict)
Index number (hex) FD
Index number (dec) 253
Pokédex number
Pokédex marker byte
Breeding result (when glitch Pokémon is female or paired with Ditto) Generation II glitch Egg (Crystal). The glitch Egg must be hybridized with another Pokémon to be accepted.
Type(s) (Varies)
Base happiness
Egg group
Color Gold
Catch rate constant
Experience group
Experience yield
Gender ratio (Can be either male or female)
Wild held item
Sprite dimensions
More research is needed for this article.

Reason given: Does this version of the Generation II glitch Egg copy any data other than the typing and base stats?

; when specified as an Egg that hatches from itself, or when the game attempts to load data for Pokémon 253 is glitch Pokémon in Pokémon Gold.

When faces a wild Pokémon, its typing will change to that of the wild Pokémon.

When faces a Trainer, its typing will change to that of the first Pokémon sent out.

Similarly, the typing and base stats of an opposing wild Egg are taken from the first Pokémon sent out by the user in a wild battle, or a Pokémon that was out before the wild Egg was sent out in a Trainer battle.

For unknown reasons, encountering a wild Egg may corrupt the graphics that relate to how many Poké Balls (party members) the player has.

This effect on the player's Poké Ball graphics does not seem to apply when encountering a Trainer House Trainer with an Egg in their party, however.


In Pokémon Gold

Attempting to load 's backsprite may cause the game to freeze. After the freeze, if a save file exists then the player's Mail Box may become corrupted, adding many glitch mail signed by GREEN.

The opponent in the Trainer House may also be replaced with a blank name glitch trainer.

In Pokémon Silver

's backsprite is different to Pokémon Gold and does not freeze the game.


By level up

(No known moves)


(No known moves)

Base stats


Pokédex entry

This glitch Pokémon's Pokédex entry may result in a Glitch Dimension.

Type effectiveness



(None known)

Methods to obtain

  1. Byte shifting via (00) or (FF) (available through stabilizing a bad clone or arbitrary code execution) (e.g. byte shift a total experience of 253 or 64768-65023 and then stabilize the glitch Pokémon at the Day Care); unconfirmed.
  2. ????? party overloading roaming Pokémon manipulation (253 Attack. If Egg's capture flag was set after the party overloading, it can be caught with no issues).
  3. Arbitrary code execution (e.g. through Coin Case arbitrary code execution, wrong pocket TMs, glitch Pokédex categories).


's Pokédex entry may freeze the game sometimes, and not freeze the game at other times.