Mask Man was an elite monster that appeared in the Upper Branches of the World Tree just like in the original game. They were fast, strong, and persistent in the chasing of you. They would lie in wait in the room in any area be it the background, the foreground, or right in front of you. You basically had no choice, but to stand and fight. Get up from stool, stool (I was inspired from the boss Muramasa from Knights of the Round), idle, strafe, run, turn, attack 1, attack 2, preparing to jump, jump, jump from background, land, die (would burn up), mace (was knocked away at death), mask pieces (knocked off when defeated).