Mini-Boss Room
Room
Description
The Mini-Boss Room is a Special Room in which Isaac battles against one of a number of mini-bosses, namely the Seven Deadly Sins, their Super variants, and Ultra Pride. The Super Sins cannot be encountered in Basement or its variants; they only appear in Mini-Boss Rooms starting from Caves and beyond. If a Red Room created by Red Key (etc.) is a Mini-Boss Room, all Sins and their variants, as well as Krampus, can be found within, even in the Basement.
Notes
* A door leading to a Mini-Boss Room cannot be bombed open. ** Using Dad's Key or a can open the door.