Grotesk
Grotesk (Marvel) appears in 11 issues in grailworth's catalog, and was first published in 1968. First appearance (also in flashback as Prince Gor-Tok): X-Men #41 (1963), cover dated 1968.
First appearance
Every appearance we value
Avengers (1963) 1 issue
Classic X-Men (1986) 1 issue
Ms. Marvel (1977) 2 issues
X-Men (1963) 3 issues
X-Men The Hidden Years (1999) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.