Topside is a G.I. Joe team operative in the A Real American Hero line. First released as a Hasbro carded action figure in 1990, with 1 distinct figure version produced across the 1982 to 1994 vintage run.
Topside appears in 1 episode synopsis across the Sunbow (1983 to 1987) and DiC (1989 to 1992) runs, first appearing in DiC's "An Officer and a Viperman" (1990). Full screencap and continuity review pending.