Mainframe
Mainframe (G.I. Joe, Blaine L. Parker, Real American Hero) appears in 55 issues in grailworth's catalog, and was first published in 1986.
Deaths
Every appearance we value
G. I. Joe in 3-D (1987) 2 issues
G.I. Joe (2008) 1 issue
G.I. Joe and the Transformers (1987) 2 issues
G.I. Joe Special Missions (1986) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.