and Marvel Team-Up, (which served as an intro to his 1984 mini-series) among others. He starred in his own self-titled, four issue limited series from Jan. to April 1984. He was later made a regular in The Avengers by writer Kurt Busiek, who explained, "I first ran into Jack in The Deadly Hands of Kung Fu in an issue drawn by Gil Kane and Rico Rival. That great overcomplicated costume and the energy that Gil put into the storytelling hooked me, and I’ve been a fan ever since". Fictional character biography Early life Jack Hart was born in New Haven, Connecticut. He is the son of Philip Hart, a scientist who created an energy source called "zero fluid", and Marie, an alien humanoid woman of the Contraxian race. After being exposed to a vat of zero fluid, Jack underwent a mutagenic change and gained the ability to project concussive energy from his body. After gaining these powers, Jack began his mission of vengeance against the Corporation that killed his father. This led to Jack fighting other superheroes such as the Sons of the Tiger and the Hulk. He also fought the White Tiger. Eventually, he killed Stryke, his father's killer. Later, Jack mistakenly fought Iron Man. Being new to super-heroics, he asked Iron Man to take him on as an apprentice, which he did, to show him the ropes. Jack teamed with Iron Man, Nick Fury, Guardsman, Jasper Sitwell, Jean DeWolff, and the Wraith, and battled Midas. Jack was briefly turned to a golden living statue by Midas, and then freed from this golden state by Iron Man and Yellowjacket. Jack then aided Iron Man in fighting the Soviet Super-Soldiers on the moon. Jack aided Iron Man against the Rigellian Commander Arcturus. Jack later went off on his own, and fought Hemlock. Being a Hero Later, Jack moved past his mission of blind vengeance and became a true hero, working with various other superheroes such as the Defenders. Jack fought the Thing, who was under mental control of the Machinesmith. Jack Hart was then reunited with a college girlfriend named Marcy Kane (who was also a fellow graduate student of Peter Parker, a.k.a. Spider-Man). Marcy, a scientist, and S.H.I.E.L.D. offered to help find a cure for Jack's dangerous super powers. Jack fought some S.H.I.E.L.D. agents, and his powers were temporarily dampened by Spider-Man. Marcy turned out to be a Contraxian