The Skeleton Mantis is the fifth boss of Cursed Moon. He holds Dracula's tooth, and his right sickle arm is actually an enlarged version of the tooth, like Dracula's Eye was an enlarged version of the relic.
The Mantis will slowly crawl about the room, occasionally stopping to charge toward the player. He can extend his neck towards the player, trying to impale them with his horns in the process, shoot fireballs, and swipe with his sickles. The right one, which is Dracula's Tooth, will temporarily decrease the player's stats when it makes contact, the opposite of the tooth's effects in Symphony & Harmony when worn. He has 4500 HP, and his theme is Destroyer.