Colosso

A Silver Age curiosity with genuine Marvel pedigree, Colosso made their entrance in 1966's The X-Men #22, brought to life by the legendary Roy Thomas and Jay Gavin during one of the most electric eras in comics history. Sharing early pages with the likes of Cyclops, Iceman, and Charles Xavier himself places this character right at the heart of Marvel's mutant mythology from the very beginning. Though appearances in the catalog are rare — spanning an impressive stretch from 1966 all the way to 2001 across titles like Fantastic Four: World's Greatest Comics Magazine and X-Men Annual — that kind of longevity speaks to a character who left a mark worth revisiting. For collectors who love hunting the overlooked corners of Marvel's Silver Age, Colosso is exactly the kind of find that makes the search worthwhile.