Creatures on the Loose — Marvel
Issue: #21 MJ
Last valuation update: 2026-03-31
Creators: Stan Lee, Artie Simek, Roy Thomas, Jim Steranko, Matt Fox, George Alec Effinger, Gray Morrow, Larry Lieber
Characters: Ar-Hap, Chak, The Green Thing, Heru, Gullivar Jones