Azelf

Azelf is a Psychic-type Pokémon known as the "Willpower Pokémon." It is one of the Lake Guardians, alongside Uxie and Mesprit. Azelf has a blue, fairy-like appearance with a large head, pointed ears, and a long tail with two leaf-like appendages. It is said to have the power to control willpower, giving it the ability to make people act according to their own desires. Azelf is known for its calm and composed demeanor, and it is often found deep within lakes, where it remains hidden from humans.