The Wheel master is a large mechanical creature part of what's known as Unbirths. He is the only boss available to the demo of Terra at the DK₤3713 event in Japan. This boss is located in the Enchanted Kingdom, a world based off of Sleeping Beauty. Though this is considered to be a hard fight, you could escape from the battle during the demo. The boss appears to somewhat resemble a large twisted spinning wheel, although it's color and more basic designs have associated it with the Trickmaster. This battle was evidence that even the bosses of Kingdom Hearts: Birth by Sleep have a high speed.