Game Masters, known in Global MU Online as "MU Masters" or [MM]s. The MM events are mostly simple events that most players have a chance to win, such as "Catch the MM", "MM is lost" or "Missing 3 items" the first player to meet the MM with his/her request is rewarded with 1 Jewel of Bless and 1 Jewel of Soul. There are examples where players have received other rewards.