Madman is a creator owned fictional superhero that appears in comic books by creator Mike Allred and which has been published by a number of publishers over the years. The character first appeared in Creatures of the Id #1 (Oct. 1990).^[1][2] His name, Frank Einstein, is a combination of Frank Sinatra and Albert Einstein, and is also a reference to Frankenstein.

Frank Einstein was born Zane Townsend, an agent of the Tri-Eye Agency. Townsend was killed in a car accident, then stitched back together and brought to life by two scientists, Dr. Egon Boiffard and Dr. Gillespie Flem. This resurrection left him amnesic, and the resurrected John Doe was named after Boiffard's artistic and scientific heroes, Frank Sinatra and Albert Einstein, respectively. The procedure left Frank with supernatural reflexes and a slight degree of precognitive and empathic power; however, he remembers nothing about his former life, but faint, troubling memories relating to his death. Madman's costume is based on the only thing he can clearly remember: a fascination with a comic book character called Mr. Excitement.

Frank Einstein now lives as a jack-of-all-trades wanderer, accompanied by a variety of allies, including the Atomics. Only one of Frank's reanimators, Dr. Flem, is still in Frank's life. Dr. Boiffard, in an attempt to boost his brain power, transmuted his entire head into neural tissue, leaving him an invalid in a hospital. Later, Boiffard became a cosmic being. Despite the fact Frank has blue skin, a metal scalp plate, and criss-crossed scars similar to Frankenstein's monster, he has a steady girlfriend, a secretary by the name of Josephine "Joe" Lombard. Madman's other allies include Mott, an alien from the planet Hoople, who was saved by Frank when another alien, Zenelle, wanted to marry and eat Mott; Gale, an invisible female scientist who was tattooed by Dr. Flem's mutant clones and further rendered invisible by her attempts to eliminate the tattoos; and Astroman and Machina, a pair of robotic humanoids. Astroman was built to be an aid to Frank and was loaded with some of Frank's lost information. Astroman grew to love Frank's girlfriend, Joe, which made Machina very jealous. Frank's also aided by Marie and Warren, two artificial intelligences from the future.

Due to a plot by the mischievous Mister Mxyzptlk, Madman and Superman switched dimensions, becoming physical hybrids of each other. They then had to retrieve portions of Superman's powers, which had been doled out amongst various people across both worlds. Finally, the two confronted Mister Mxyzptlk, and Madman defeated him in a game of Twister before tricking him into saying his name backwards.

Currently, Joe had been fused with Luna (It Girl) and has recently been "pulled" from her body. Frank has met with ghosts and learned more about his previous life, including great insights to the ways of the universe. After Frank is told of Joe being pulled from Luna, he rushes back to Dr. Flem's laboratory, but finds that Mr. Monstadt has returned in a new, artificial body which is powerful enough to defeat him, most of the Atomics, and Joe, who was going to surprise Frank by becoming Madgirl. Immediately after the defeat of Monstadt, a fallen Atomic is revived and the team celebrates by going on a camping trip.

Madman has a cameo appearance in Invincible #60 (2009), appearing alongside other heroes from the Image Universe during "The Invincible War".

Frank's resurrection altered his body, giving him various supernatural abilities. He possesses a supernatural intuitive talent for learning, allowing him to instinctively learn any skill and gain knowledge at a superhuman rate. He possesses supernatural physical coordination. His agility and reflexes are far superior to those of an ordinary human. His tendons and connective tissues are more elastic and his nerve endings transfer stimuli faster.

Frank has also manifested numerous psionic abilities that border on the supernatural, including the power to obtain information about an individual by making physical contact, empathy, and clairvoyance. He is also able to perceive the future, sometimes manifesting in vague dreams while asleep, other times displayed in clear thought, and sometimes occurring at will. Unfortunately, he does not have complete control over his psionic abilities.