Agent R
Agent R (from Operation Rebirth, Marvel Silver Age) appears in 4 issues in grailworth's catalog, and was first published in 1965.
Every appearance we value
Captain America (1968) 2 issues
Giant-Size Invaders (1975) 1 issue
Marvel Super Action (1977) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.