Big Boy (Marvel, Sentinel)
Big Boy (Marvel, Sentinel) appears in 5 issues in grailworth's catalog, and was first published in 2000. First appearance: X-Men The Hidden Years #9 (1999), cover dated 2000.
First appearance
Every appearance we value
X-Men The Hidden Years (1999) 4 issues
X-Men Universe (1999) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.