The Cobra Star-Vipers didn't see much action in the comics or the cartoon, which is a shame because they have a really nice uniform. A very "Space Navy" kind of look.
I originally based the Star-Viper mini off the minor character in the comic who infiltrates the Joe base and is mostly shown without his helmet but instead with a small bandage on his forehead (from the implant.) After painting that version though (again using the Heroclix Red Robin), I decided I wanted the helmeted version more, so I slapped on a helmet of green stuff.
I suppose I could have done a second one with the helmet, like I've been doing with the M.A.S.K. miniatures, but...eh...