Unused TBOI repentance enemies:
both unfinished Enemies, the Vessel is a bloated decaying fatty that is supposed to spawn maggots upon death, has no animation, only has a side profile info from antibirth:
The Vessel is a monstrous maggot-infested Fatty. It strolls towards Isaac, spawning a Small Maggot when it takes damage. Occasionally it stops to spew out even more Small Maggots along side an irregular puddle of damaging green creep around itself. Upon death it explodes into multiple Small Maggots.
The corpse eater is only partly made, only part of the sprite is completed but has some animations and moves and attacks, spawns a maggot upon death info from Antibirth:
Corpse Eaters are monstrous enemies that dwell in the later chapters. Their behavior is similar to that of a Grub, wandering around the room aimlessly and charging at the player if he gets in its line of sight. Greater caution is advised, however, as Corpse Eaters move a lot faster than Grubs. Also, Corpse Eaters will occasionally target enemies such as Small Maggots, Gapers, or even bosses like the Gurglings, and eat them. Upon successfully doing so, the Corpse Eater will gain health (based on the health of the eaten enemy, up to a maximum of double its original health) and start spitting out large quantities of blood shots and bones in all directions as they move about, creating additional hazards.