~* Captain America *~
Codename: Captain Amercian
Name: Steve Rogers
Affiliation: SHIELD
Age: Unknown
Powers: Superhuman abilites created by experiment
Episode Appearance: Operation Rebirth
Originally from: Unknown
Rebirth was a machine created to "enhance" humans and create super soldiers during World War II. It was only used on one man, Steve Rogers. Rogers fought as Captain America in the war alongside a young Wolverine. During WWII, Wolverine is teamed up with Cap on a mission to free some POW's. The mission is successful and one of the boys that they save turns out to be Erik Lehnsherr (who will later become Magneto).
Unfortunately the experiment that gave Captain America his super powers actually caused a "cellular breakdown" that was killing him. So Wolverine and Cap destroy Rebirth to keep anyone else from suffering. Cap is now encased in a cryogenic chamber, waiting for them to find a cure for the damage caused by Rebirth.