Marcus Immortus (Temporal Limbo)
Marcus Immortus (Temporal Limbo) appears in 6 issues in grailworth's catalog, and was first published in 1980. First appearance: Avengers #200 (1963), cover dated 1980.
First appearance
Origin
Every appearance we value
Avengers (1963) 2 issues
Iron Man (1998) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.