Simon Bar Sinister (Underdog foe)
Simon Bar Sinister (Underdog foe) appears in 5 issues in grailworth's catalog, and was first published in 1970.
Every appearance we value
Underdog (1970) 1 issue
Underdog (1975) 2 issues
Underdog (1987) 1 issue
Underdog (1993) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.