Game: Mega Man
What Makes Him Bad: Instead of creating innocent childlike robots, Wily created evil ones.
What Makes Him Cool: That crazy mad scientist is a villain we love to hate.

Dr. Wily could have kept himself content with creating robots that were playful or childlike in nature. Instead, he grew jealous of Dr. Light's robots and decided to dedicate himself to rolling out vicious bots with heinous powers in order to prove himself. Talk about a superiority complex.