Mutant-Master
Mutant-Master (Marvel) appears in 5 issues in grailworth's catalog, and was first published in 1967. First appearance: X-Men #37 (1963), cover dated 1967.
First appearance
Deaths
Every appearance we value
Classic X-Men (1986) 1 issue
X-Men (1963) 4 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.