Which Pokémon are in the Amorphous egg group?

There are 11 Pokémon in the Amorphous egg group, including Gastly, Haunter, Gengar, Wobbuffet, Koffing, and more.

Can Amorphous group Pokémon breed with other groups?

Pokémon in the Amorphous group can only breed with other Pokémon in the same group (or with Ditto).

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Gaseous, gelatinous, or shapeless Pokémon. Includes Ghost-types and amorphous species like Grimer.

11 Pokémon belong to the Amorphous egg group.