All bosses from the game.
“Conquest is a boss and one of the Harbingers founded as an alternate boss to Death in The Womb...Conquest
“The Duke of Flies is a boss first encountered in The Basement from The Binding of Isaac: Rebirth.The Duke of Flies
“Larry Jr. is a pair of bosses first encountered in The Basement. He appears as a pair of worms...Larry Jr.