Rage Creeps are stronger types of regular Wall Creeps appearing in The Binding of Isaac: Rebirth. They first appear in Chapter 3.
Like the Blind Creep, Rage Creeps has a chance to replace normal Wall Creeps.
They will try to line up with Isaac and fire a Brimstone shot. They were very powerful since they can perform a strong Brimstone-attack but move a lot slower than other Creep variants. Isaac needs to be careful while dealing with them, especially if there were multiple Rage Creeps in the room.