As Avengers Island begins to slide from its perch atop the living lava column, Jarvis calls for help, and Mr. Fantastic and Invisible Woman respond, followed by Wonder Man and his fellow West Coast Avengers. In the blistering heat of Subterranea, the Avengers battle the lava-beast, who delivers a devastating blow to Gilgamesh. The surviving Lava Men emerge from their immobile stone states and show Jinku that he and they have transformed into golden, evolved forms now that they are free of Cha’sa’dra’s influence. They explain that the rest of their race died because they were tainted by the demon’s evil. Jinku realizes that his vengeance against the Avengers was misplaced, and the heroes turn their attention to the fallen Gilgamesh.
Cha’sa’dra turns the Gortokians into Lava Men and is worshiped by them before he is slain, after which most Lava Men die and the rest are immobilized (Av #306, ’89).
Mr. Fantastic refers to Avengers Island by its former name of Hydrobase.