Hakase

Hakase was first introduced in the Versus Revolution series of the Duel Masters anime. He is part of the secret society of Duel Masters Land.

Details
He was in charge of the technical and programming of the park. As he was a genius in gadgets and robots, he calculates his probabilities of succeeding. However, he cannot tolerate losses, shown when he lost against Lulu Takigawa through the robot he controls and programmed.

Duel Masters Versus Revolution
He first appears under the shadows when he opens the gates for Basara.

He makes his formal appearance with Basara and Rambo, creating and controlling a robot to stop Lulu for searching Katta. He even programmed it to destroy Lulu's card shop, attacking Benchan and Hokaben. Through the robot, he duels Lulu but lost. Lulu destroys the robot, causing the transmission to be cut. He got frustrated that their plans got foiled.

Deck
Through the robot, he uses a Water Civilization deck.