Has functional form

A "functional form" is a Pokémon form that changes something about the way that Pokémon behaves mechanically (e.g., in battle): a different type combination, different base stats, different available moves, etc.. It is different from a "cosmetic form" that only changes the Pokémon's appearance but otherwise leaves it mechanically unaltered.

These Pokémon are "standard" forms, and they may take one or more additional functional forms.

Phoenixdex Pokémon tagged "Has functional form" (5)