Grandmaster Sensei is the creator curator of The Islands levels and also Ze Dude's sensei, whom Ze Dude recommends when Sackboy beats him at The Construction Site. To finish her levels you have to defeat The Terrible Oni, who's minions have captured Grandmaster Sensei's castle and inhabited an evil volcanic stronghold. she rides on an electrified cloud to give you tips. Later in the game, Grandmaster Sensei is locked away by the Collector, and freeing her earns you her character model in Create Mode.