[1] FGU published the first superhero role-playing game, Villains & Vigilantes, in 1979.
The sequel to that adventure, also published in 1982, was The Island of Doctor Apocalypse, a 22-page saddle-stapled softcover book written and illustrated by Bill Willingham.
[1] Barton commented that "Overall, Island of Dr. Apocalypse is a satisfying follow-up adventure to Death Duel and should help gain new adherents to V&V – possibly even regain some who may have defected to some of the newer second-generation superhero RPGs.
And if not, with a few revisions Island would make a great adventure for Champions or Superworld too.
"[1] In the November–December 1984 edition of Different Worlds (Issue #37), Paul Ryan O'Connor found much to like in this adventure's clean layout, but thought that the module lacked the humorous tone of previous Villains & Vigilantes releases.