Azelf

Azelf is a Psychic-type Legendary Pokémon.

It is not known to evolve into or from any other Pokémon.

Along with Uxie and Mesprit, Azelf is a member of the lake guardians, the Sinnoh region's Psychic-type Legendary Pokémon trio. Azelf is the bringer of willpower.

Biology
Azelf is a small, gray-blue, fairy-like Pokémon. It has two tails that each have a red jewel on them. These are, presumably, two of the jewels which complement the Red Chain. Azelf has a partially cyan face with another red gem encrusted into its forehead. Azelf has a cone-shaped head with elf ear-like protrusions on each side.

Azelf's spirit can leave its body without dying and can return to the body at will. It sleeps at the bottom of a lake to preserve the balance of the world. It can control an individual's will or enter the body of an individual. Legends say that if Azelf is harmed, it can cause humans to lose all will inside of them, making them completely immobile for all eternity. It was shown in The Needs of the Three! and The Battle Finale of Legend! that it can teleport itself, as well as other Pokémon and humans. Azelf can be very cautious around people and Pokémon. However, if threatened, it will reveal its bold side. Azelf has been referred to as the "The Being of Willpower" due to its role in giving humans the determination to face challenges in life.