Captain America (Marvel, 1968 1st Series) #121

Cover pencils by Gene Colan, inks by Joe Sinnott. "The Coming of... the Man-Brute!", script by Stan Lee, pencils by Gene Colan, inks by Joe Sinnott.

Cragg obsesses over Captain America, thinking he sees the hero wherever he goes. He researches Cap, vowing to destroy him. Cragg formulates a super soldier serum with the intent of making someone stronger than Cap, creating a being named Man-Brute!