Mudokons used to cut off Glukkons legs and fry em up for Sunday Dinner.
I think it shows a sign of evil. When a Villain is missing something.
Glukkons: Legs
Sligs: Arms
Hitler: Testical
Slogs: Hands/ other two feet?
Interns: Mouth
Vykkers: Nothing. But I don't consider them to be evil. I consider them more like The Ferengi. Wishing they were evil but actually they are quite weak.