My example: Randall Boggs is more evil than Henry J. Waternoose III.
While Waternoose is only driven to villainy due to his company going under pressure, with the lack of children being scarred and still caring for Mike and Sulley, Randall is far more spiteful having showing sadistic joy in banishing Mike and Sulley, and only did what he did for his own personal gain, and likely wouldn't have cared if Monsters, Inc went out of business.