Madman (Marvel Comics)

Madman (Philip Sterns) is a supervillain within the fictional Marvel Comics universe. The character is portrayed as one of the Hulk's enemies and as the brother of the Leader.
Publication history.
He first appeared as Philip Sterns in "The Incredible Hulk" #363 (December 1989) and as the Madman in "The Incredible Hulk" #364 where they were created by Peter David and Jeff Purves.
Fictional character biography.
A former schoolmate of Bruce Banner, Sterns develops a deranged love/obsession with Banner's "career" as the Hulk. Sterns subjects himself to a multitude of experiments involving gamma-radiation to emulate his "hero." This results in Sterns turning into a distorted monstrosity with vast superhuman strength and developing multiple personality disorder. From this point, a much stronger, arguably deranged, personality gives him ‘orders’ to carry out.
Calling himself the Madman, Sterns hatches a plot to kill the Hulk, giving him a poison injection that rapidly deteriorates his physical state. This puts the Hulk in conflict with various members of his rogues’ gallery, most notably the Abomination, turning weaker and more emaciated for every battle. Samuel Sterns, the Leader and Phillip's brother, comes to the Hulk's aid and helps him track down the Madman to find the antidote. He explains that the Madman "frightens" him, but cannot force himself to kill his brother. During the ensuing battle, the Madman suffers a psychological breakdown, completely submerging his original personality, and the Hulk manages to cure himself, as well as poison the Madman, leaving the latter on the verge of death, with the remedy dropped barely out of reach.
Later, the Madman reveals that he simply increased his mass to grab it, and used the time to masquerade as a researcher in the Red Skull's "New World Order" organization. Here, he helped to engineer the transformation of a captured S.H.I.E.L.D. agent into the power-mimicking creature known as Piecemeal, and installed a safety override, making it answerable only to himself.
When tracking the creature, he finds it in confrontation with the Hulk in the vicinity of Loch Ness, and knocks out his enemy from behind. He dumps the Hulk into the lake saddled with iron weights, but is disappointed when the latter takes longer than expected to escape. During the ensuing gang-up, the Madman continues to make disorderly, deranged remarks. When Perseus, a retired Pantheon member the Hulk was visiting, tries to intervene, the Madman indifferently kills him, but the Hulk punches him away.
While the Hulk seemingly kills Piecemeal, the Madman decides to take off in a stolen jet. The Hulk overtakes and starts to dismantle the jet, and the Madman triggers a pilot-chair parachute, remarking that he is not interested in killing the Hulk, since it would be dull to not annoy him anymore, and detonates the plane.
After landing in London, where the two superhumans called Killpower and Motormouth happen to be staying, he immediately holds the British Prince Charles hostage on top of Buckingham Palace, and demands to be declared king of England. As the Hulk comes to the rescue, the Madman states that the latter should understand the demands to use great power and shifts from crying to irreverently upbeat within seconds, dropping the Prince towards the ground. The Hulk catches up to him, while the Madman, after being knocked back by Motormouth, is in the middle of a temper tantrum about everybody "ganging up on him", and manages to knock him down. The Madman once again voices his "love"/admiration for the Hulk/Banner, but takes the opportunity to escape as the Tower Bridge collapses underneath them.
As part of the "Marvel NOW!" event, the Madman resurfaces and has been seen supplying gamma technology on the island of Kata Jaya. He runs afoul of the Red Hulk's incarnation of the Thunderbolts.The Madman was killed by the Leader in his Red Leader form when he whispered something in his ear.
After taking over Kata Jaya, the Leader makes a deal with Mephisto that allows him to observe the Madman being tortured in Hell. When Mephisto later takes the Leader to Hell, he notes that they need to "get his brother over here with some razor blades".
Powers and abilities.
Like the Hulk, the Madman has vast superhuman strength. Unlike the Hulk, however, the Madman is unable to become stronger as he becomes angrier, but he is capable of creating significant boosts in his size, density and power, being able to reach at least twice the "calm strength level" of most incarnations of the Hulk. He once knocked out the Hulk with a single punch to the head through the advantage of surprise. He has also claimed to be able to assume many different appearances, including the scientist spying on the "New World Order".