Miller the Killer is a bully at Hills Village Middle School. He tormented and humiliated Rafe Khatchadorian while in middle school. Miller has a younger brother, who inherits his bullying ways and attempts to humiliate Rafe’s younger sister, Georgia.
Miller is huge with blonde or orange hair and tattoos. He is always seen in a sweatshirt, t-shirt, jeans, and sneakers. In one of Rafe's drawings he has a detective coat and fedora. He is sometimes seen with the Operation R.A.F.E. notebook.
- Rafe makes Miller a nickname: "Miller the Killer Chicken"
- Miller has tattoos