Concerning something in the code...

I've been looking through the code, and apparantly a friend I talk to online and myself found something in there regarding about a Skeleton Priest or some sort.

Is it already in the game as a different enemy or was the enemy originally going to be in the game but got scrapped at the last minute or something?

Something tells me that the old-looking Coolie ghost-like sprites (The ones used for placing Coolie Ghosts in the build editor, not the ones that are actually ingame)

Really would like to know what the Skeleton Priest is or something.