In order Sign of The Times, Purple Rain, 1999, Crystal Ball, and Gold Experience.
Honorable Mention Diamonds and Pearls
Joe hard hard question to answer if you think about the Original cartoon gave each character so much depth. Just thinking about that episode about Shipwreck on that Cobra island with a false family gives me goosebumps. So many episodes like that too.
Oh wait I just remembered my all time favorite definitely Beachhead....."ha pathetic"
Bad guy Storm Shadow based on aesthetics alone and I've always had an affinity for the anything with Shadow in it.