Abnormal Pokémon

Error prevention and placeholders in the Pokémon games:

?????????? | ????? | ! | Abnormal Pokémon | Bad Egg | Enigma Berry (Generation III) | Error! | Error codes (Generations I and II) | Error traps for damaged save data | Error traps to prevent impossible progress | Event data debugging messages | Instant victory effect (Generation II) | Mystery Zone | N/A | Pokégear instruction booklet trap | Rhydon trap | Special (location) | This Game Pak is designed only for use on the Game Boy Color. | This Pokémon cannot be traded.

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Abnormal Pokémon (Japanese: いじょうポケモン) is a blanket term for untradeable Pokémon in Generation II, not to be confused with glitch Pokémon.

It is an error trap used to prevent players from trading glitchy Pokémon, even if not much harm would be caused after trading them.

When the player attempts to trade an abnormal Pokémon, either between two Generation II games, or from Generation I to Generation II, they will get the message "Your friend's (Pokémon name) appears to be abnormal!" (Japanese: あいてがわが えらんだ(Pokémon name)に いじょうが あるようです!!, literally meaning: "The (Pokémon name) you chose from the other [Trainer] appears to be abnormal!!")

There is another message that says "Sorry, but your POKéMON appears to be abnormal. We can't accept it." The untranslated version was apparently used for when attempting to deposit an abnormal Pokémon up for trade using the Mobile System GB.

What defines a normal Pokémon

This article is incomplete. Please feel free to add any missing information about the subject. It is missing: {{{1}}}.

The following factors influence whether the Pokémon is labelled as abnormal:

• If the Pokémon's donor and recipient bytes do not match. (but it is possible to trade a Pokémon like this from Generation II into Generation I)
• If the Pokémon is a ????? of any kind.
• If the player trades a glitch Pokémon from Generation I into Generation II (but not when trading Generation II Pokémon into a Generation I game).

Notably missing are Pokémon with impossible moves and Pokémon with impossible levels. It is even possible to trade a Cooltrainer move Ditto into Generation II to get the equivalent hex:00 glitch move there.