Thread:JeloElducal/@comment-26888167-20180505135042/@comment-26888167-20180511025251

Let's see:

Evil doctors: Eggman, Bright Spark, Re-Peat Boss, Dr. Stitch, Dr. Zack, etc.

Robot (specially robotic copies of someone): Metal Sonic, Mecha Sonic, Fork-Bot, etc.

Hm... how about an evil wizard? Or a leader of an alien race who wants to take over the world? Or  how about a giant fire-breathing dragon who is evil for some reason? Or how about a person who was enslaved by another villain, and his experiences have turned him into a villain who plans to overtake the other villain and take over the world instead?