G.I. Joe: The Motion Picture (1987)
The 1987 Joe film: three TV episodes stitched into a feature plus the one origin the series never animated, Serpentor grown from Napoleon's DNA.
Tag eighties cartoons
G.I. Joe: A Real American Hero (1985)
The after school institution that turned a toy line into mythology: Snake Eyes, Cobra Commander, the PSA coda, all 139 episodes of the Sunbow and Marvel classic.