Invisible Man

The Invisible Man is a man named Griffen who was turned invisible by a special chemical agent.

Wendy once asked Marvin if the Invisible Man was his table tennis opponent, since he was playing with a paddle ball. As seen in The Balloon People.

History
Griffin was a brilliant research scientist who discovered a formula that made a human being invisible. The formula entails taking opium and another drug, which make his blood clear, then processing him in a radiator engine. It succeeds, but he finds himself unable to reverse the process. He is possibly a psychopath, even before he makes himself invisible.

Super powers

 * Invisibility

Abilities

 * Sciences: Griffin is a scientist who is well versed in such areas of science that he studies.