The Mad Hatter, also known as Jervis Tetch, was an enemy of Batman. He carries a variety of hats, and can also control the human mind, either through hypnosis or direct technological means. He appears in Lego Batman: The Video Game. He carries a small handgun, and he can double jump (due to a propeller built into his hat) and mind control on certain targets. He has also been known to have worked with Hush, but their partnership only lasted for one crime.