Guardsman (character)

The Guardsman is the name of several characters appearing in American comic books published by Marvel Comics. The first incarnation of the Guardsman, Kevin O'Brien, first appeared in Iron Man #43 (November 1971). The second incarnation, Michael O'Brien, was introduced in Iron Man #97 (March 1977). The codename has also been used collectively for a squad of armored agents serving as security at the Vault, as well as for a unit deployed by Alchemax to hunt extraterrestrial threats.