George Martin
George Martin (Marvel) appears in 4 issues in grailworth's catalog, and was first published in 1989. First appearance: X-Men #240 (1963), cover dated 1989.
First appearance
Every appearance we value
X-Factor Annual (1986) 1 issue
X-Men (1963) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.