Model X3Z (Omega the Unknown, Marvel)
Model X3Z (Omega the Unknown, Marvel) appears in 3 issues in grailworth's catalog, and was first published in 1976.
Every appearance we value
Amazing Spider-Man (1963) 1 issue
The Defenders (1972) 1 issue
Omega the Unknown (1976) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.