John Corben (Metallo)
John Corben (Metallo) appears in 28 issues in grailworth's catalog, and was first published in 1959.
Every appearance we value
Action Comics (1938) 3 issues
Adventures of Superman (2013) 1 issue
Batman / Superman (2013) 1 issue
Darkness / Superman (2005) 1 issue
Doom Patrol (1987) 1 issue
Superman (2006) 2 issues
Superman Adventures (1996) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.