What's Great About Bowser

How do you evolve a franchise with an almost-static main character? You look to his antagonist: Bowser, King of the Koopas. Also known by his objectively superior Japanese name: Great Demon King Koopa.

Super Mario’s World is a look at the characters that turned the Mario franchise into a household name for 35 years.
https://kotaku.com/whats-great-about-bowser-1845971445