The comic book character Captain America was created by Joe Simon and Jack Kirby and first appeared in _Captain America Comics_ #1 (March 1941). The character is a costumed superhero alter ego of Steve Rogers, a young man from Brooklyn (Earth-616). The nickname "Nick Hobbie" is an alias used by Captain America in the Marvel comic books.
Background
Hobbie Brown is a former professional baseball player who was given a super-soldier serum by the Flag-Smasher's U.L.T.I.M.A.T.U.M organization in an effort to create an ultimate supersoldier. This serum increased his strength, speed, and durability to superhuman levels, and also granted him the ability to fly. However, the serum also drove him insane. He later became the superhero known as Nomad.