Post edited. Chill out and don't swear, dude.
There has never been a reference to bowl heads in any Mario game.
Um, Kappa Mountain in SMW?
Bowser is not based off a Kappa. The end. Sure, there may be similarities, but that doesn't necessarily mean anything. There are similarities between dogs and humans, but that doesn't mean we're "based" on the other.
You can have your opinion, but it's not going to change facts and other people's minds. You've already made your point, so please drop it, okay?