The Red Hulk is more ruthless and cunning than the Green Hulk, He has defeated some of the most powerful individuals on the plant, and possibly killed them. For reasons unknown, Red Hulk was recruited into The Ultimate Alliance to fight The Fold. He can use guns in his hulk mode.
The Red Hulk was born in New Hampshire on January, 1st 1946. As a teenager, he learned how to fly by barnstorming at county fairs. He then attended the United States Military Academy and did well when he graduated. His first duty station was stateside under the command of Captain Lee, an officer in the Army Air Corps. Ross had regarded Captain Lee well as a leader, and his respect was cemented when he fell in love with and eventually married Karen Lee, his daughter. The two eventually had a child together they named Betty.
Years later, He became a General in the Air Force who is in charge of Bruce Banner's gamma bomb project. His daughter, Betty, takes a liking to the young scientist, a fact which only enhances the dislike the rough Ross has for the "weakling" scientist Banner. After Banner's transformation into the Hulk, Ross spends years chasing the monster, becoming obsessed enough with it to commit treason by allying himself with the Leader, Justin Hammer, The Hulkbusters and the Abomination in order to destroy the Hulk. Dismissed from the military, he shows up at Betty and Bruce's wedding with a gun and shoots Rick Jones. He is recruited by S.H.I.E.L.D. agent Clay Quartermain to merge with the electric creature Zzzax, a process that gives Ross superpowers but, also makes him mentally unstable. He is later restored to human form but retains some residual energy-generating powers.
Ross and Doc Samson had a hand in the creation of the Red Hulk, assisted by A.I.M. and the Intelligencia. The true extent, revealed during the Intelligencia's invasion of Washington, D.C., was that Ross had become the Red Hulk to further his vengeance against Banner and as part of a promise made by the Intelligencia to revive the then-thought deceased Betty.