On Sale Date from the publication date reported to the Catalog of Copyright Entries, Third Series, Volume 22, Part 2, Periodicals, January-December 1968. Copyright number B474887. Copyright given to Olympia Publications, Inc., Marvel Comics Group.
Hulk; GUESTS: Ka-Zar; Zabu; VILLAINS: Umbu (1st and Death); Swamp Men
Ka-Zar and the Hulk battle as the jungle lord tries to figure out a way to get him to turn back into Bruce Banner in time to stop an alien machine from destroying the earth using deadly weather patterns; Ka-Zar is captured and taken by the Swamp Men to be a human sacrifice for the giant creature known as Umbu; Hulk fights Umbu but transforms back into Banner thanks to a fortuitous gas attack; Banner races to stop the mysterious earth destroying machine with Umbu close on his tail and trying to stop him; Banner succeeds but is killed in achieving his victory.