Mulligan

Prey
The Prey runs away from Isaac and periodically spawns Small Leeches. It also spawns 1-2 Small Leeches upon death.

Mullighoul
The Mullighoul floats away from Isaac, occasionally spawning a Willo. It also spawns 1-2 Willos upon death. Though they appear to be ghosts, Mullighouls cannot fly over obstacles.

Bouncer
The Bouncer runs away from Isaac. If Isaac gets close, its head inflates and it starts chasing him. If its head is inflated, any non-explosive damage done to it is reduced by 75%, it has a chance to reflect tears, and it releases a chaotic burst of red shots upon death, some of which float in place. Otherwise, it releases four shots in the diagonal directions.