Red Dog is one of the Renegades, a black-ops squad of paroled prisoners assembled by Sgt. Slaughter and first appearing in G.I. Joe: The Movie (1987). First released as a Hasbro carded action figure in 1987.
Red Dog did not appear by name in the Sunbow or DiC cartoon series synopses. Original Hasbro file-card lore and Marvel ARAH comics appearances are the primary characterization sources.