Adult Leech

Adult Leeches are matured and more massive variants of Leeches. They wander around the room, and if Isaac lines up with one horizontally, it will charge at Isaac and release a ring of blood shots in all directions upon colliding with the wall. They will occasionally burrow into the ground and reappear, either by bursting out of one of the walls closest to Isaac or attempting to crash into Isaac from above and sending out another ring of blood shots on impact.

Trivia

 * This enemy started out as a mockup for a Corpse altfloor by artist NotYourSagittarius in February 2015.