Enamorus

In Incarnate Forme, Enamorus is a slim, pink, genie-like Pokémon with four magenta forehead horns, white tied-back hair shaped like a heart, and magenta diamond and magatama-shaped spots covering its body. In Therian Forme it instead resembles a flying cloud turtle and snake hybrid, with magenta flippers, a long coiled snake-like tail, and a green gem on its belly. It does not evolve, but is the only member of the Forces of Nature to be female, and despite being Flying-type it cannot learn any Flying-type move by leveling up, a trait shared with Thundurus and Landorus.

Enamorus is the only Legendary Pokémon whose species stands last in a generation's National Pokédex, since every prior generation's listing ends with a Mythical Pokémon instead. Incarnate Forme Enamorus is also the only Legendary Pokémon introduced during Generation VIII to have a Hidden Ability, and it is the only Pokémon that can only be caught in Hisuian Poke Balls in the main series.