Courtesy of Biomediaproject which still had these games miraculously archived, I decided to take the time to decompile the files to take a closer look at the villain sprites.
As those who have played the games know, the sprites are condensed versions of the actual CGI models from the TV series - complete with their rusted battle damage and spinning pin holes (which you can see if you look closely on Corroder's upper arm); the only differences being the absence of their meteor blasters and Thunder's claw arm being longer
So here are the animations compiled into individual videos (pardon the quick flashing - it happens when I transition from one animation to the next). Each has an idle, walk (except Von Nebs), defeat, and two attack animations.
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They are very well made IMO, it was a shame that the actual game had a bad frame rate so you couldn't see their animations very well.
Next up are the Ordeal of Fire and Savage Planet sprites, so stay tuned!