Bill Foster is next seen during the Evolutionary War. He is a scientist working for the High Evolutionary at his base in the Savage Land. After discovering the High Evolutionary's plans for a genetic bomb, Foster sends a distress message to the West Coast Avengers. Mockingbird, Tigra, and Moon Knight are the only Avengers to answer his summons and join him in destroying the base. Foster reveals that he had been suffering from cancer since his last appearance. He retakes an improved growth serum, which adds clean (cancer-free) mass to his body, so he remains at giant-size until he can receive further treatment. This was the last mention of Foster's cancer. Giant-Man later defeats Doctor Nemesis and Erik Josten in their scheme.