Cherrim, the Blossom Pokémon. Cherrim stays quiet until its flowers bloom when it becomes quite excitable.
– Ash’s Pokedex
Cherrim has two forms, the overcast form, and the sunny form. It is usually in the overcast form, but when in sunlight (after using Sunny Day for example), it transforms to the sunny form. Its ability (the only ability it can have, and it’s the only Pokemon that can have it) Flower Gift also boosts its stats in sunlight.
Stat-wise, it has pretty even stats, with the most in Sp Attack. It can learn Solar Beam, so if in sunny weather, it can do pretty good damage.