Sergeant Duffy (Steve Rogers' WWII sergeant)
Sergeant Duffy (Steve Rogers' WWII sergeant) appears in 29 issues in grailworth's catalog, and was first published in 1941. First appearance: Captain America Comics #1 (1941), cover dated 1941.
First appearance
Every appearance we value
All-Winners Comics (1941) 1 issue
Captain America (1968) 4 issues
Captain America (2005) 1 issue
Marvel Super Action (1977) 1 issue
Tales of Suspense (1959) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.