The Ultimate Marvel version of Frank Simpson is the man who was given the Super Soldier Serum during the Vietnam War when Captain America was MIA after World War II, but his origin is more reminiscent of a post World War II equivalent. Like his mainstream counterpart, Simpson has the American Flag tattooed onto his face. Simpson, completely disillusioned by America after Vietnam (1972), is believed to have betrayed his country due to the war and the augmentations but has "seen the Light". He is trying to sell his reverse-engineered serum blood to the North Koreans, but is stopped by British S.A.S. and Steve Rogers. After his identity is revealed to Carol Danvers, Cap is beaten, and travels to Saloth, a Cambodian village but Simpson and his army (all pumped up with the Super-Soldier Serum) beat the Captain. Simpson vows to make Cap "see the light", strongly believing America stands for a number of atrocities in the last 50 years but Cap escapes and stops Simpson. He is brought into S.H.I.E.L.D. custody. Simpson is later visited by Cap in the Triskelion, which has the Captain reading the Bible to Simpson who is now bed-ridden.