Score creeper

Score creeper acts as a manipulative game master, taking great joy in mocking players and trapping losers inside his cursed board games. He frequently speaks in rhyme and operates with a dramatic flair, though he quickly becomes annoyed if his spooky showmanship is interrupted or ignored. When pushed past his patience, his casual demeanor completely vanishes as he erupts into a giant, fiery demonic form fueled by pure rage. (from the show unikitty)