Poll
36%
36%
27%
Bowser is hardly a joke. The guy has godly militarizing power if you factor all teh times he's conquered the Mushroom Kingdom and then had his forces destroyed yet come right back with more.
He also has mass transmutation power which he used to turn the inhabitants of the Kingdom into those clouds and stuff with smiley faces on them.
He can teleport, survive lava, etc.. He's no slouch.