Kim Il Sung

Bursting onto the Marvel scene in the landmark pages of The Uncanny X-Men #210 in 1986 — courtesy of the legendary creative team of Chris Claremont, John Romita Jr., and Dan Green — Kim Il Sung is a Copper Age figure whose debut dropped right in the thick of one of Marvel's most consequential eras for mutantkind. With ties to the Marauders, the X-Men, and the Morlocks, this character moves through some of the most storied corners of the X-universe, sharing pages with heavy hitters like John Greycrow, Vertigo, Harpoon, and Scrambler. Three of their appearances carry key-issue status among collectors, a testament to the charged, pivotal storylines they've been woven into. Nearly four decades of appearances across Uncanny X-Men, New X-Men, and beyond make Kim Il Sung a quietly durable presence in Marvel's mutant tapestry — exactly the kind of deep-cut discovery that rewards the dedicated reader.