This is a list of characters in the anime and manga series Bleach who are either hollows or arrancar. Hollows and arrancar serve as the primary villains for most of the series.
The hollows are the primary antagonists at the start of the series, whom Ichigo must regularly dispatch. Those hollows listed here are those given names, either in the series or accompanying databooks.
Acidwire is the snake-like hollow form of Orihime Inoue's brother, Sora. He regains his reason and personality after having his mask partially shattered in combat and purifies himself with Ichigo's zanpakut?. He has a humanoid upper body with snake-like lower body. He gets his name from his ability to spit acid.
Shrieker is a bat/frog type hollow. Shrieker can fly and control little creatures he describes as his "artillery." The creatures can shoot leeches out of their heads that attach to anything they hit. By vibrating his tuning fork-shaped tongue, Shrieker can make the leeches explode