The Espada in Bleach are organized by number ... A group of Hollows that tore off their masks and gained Soul Reaper powers, hence the name "Arrancar", Spanish for "to tear off".

Nelliel Tu Odelschwanck, the powerful Arrancar, returns in Bleach Thousand-Year Blood War with two modes. Originally the Tres Espada ... her face and her Hollow mask had the shape of a ram.