Arrancar are a type of character from the anime and manga series Bleach, created by Tite Kubo. They are former Hollows, which are malevolent spirits that consume souls. Arrancar possess both the abilities of a Hollow and the powers of a Shinigami, or Soul Reaper, allowing them to use unique techniques and combat skills. The transformation from Hollow to Arrancar involves removing their masks, which grants them enhanced powers and a humanoid appearance. Each Arrancar has a distinct rank and abilities, often determined by their strength and the number of Hollows they have defeated. They play a significant role in the series' storyline, particularly during the Arrancar Arc.