Colonel Nicholas Joseph "Nick" Fury is a fictional World War II army hero and present-day super-spy in the Marvel Comics universe. Created by artist Jack Kirby and writer Stan Lee, Fury first appeared in Sgt. Fury and his Howling Commandos #1 (May 1963), a World War II combat series that portrayed the cigar-chomping Fury as leader of an elite U.S. Army unit. The character makes frequent appearances in Marvel comic books as the head of S.H.I.E.L.D. and as an intermediary between the U.S. government or the United Nations and various superheroes. It is eventually revealed that Fury takes a special medication called the Infinity Formula that halted his aging and allows him to be active despite being nearly a century old.