Sub-Boss, also referred to as a Room Guardian, is an enemy you encounter along your way. They are usually fought within a closed room (the entrance/exits won't open until you beat them). The usually aren't as powerful as guardians and unlike a guardian battle, you don't need an Ankh Jewel to unlock them.

List of Room GuardiansEdit

Dimensional Corridor Sub-BossesEdit

There are 11 sub-bosses in the Dimensional Corridor, the children of Tiamat.