Apparently Wario Was Mario's Childhood Friend and Bowser "Could Not Stand the Idea of Happy Fungi" and more info about each characters history

[AZWification]

Jizz_Beard_thePirate said:

Well, Mario was a bit of a dick to Wario such as in this comic so I can kinda see him being Jealous

Wow.. Mario used to be such an asshole! Poor Wario..