Evil Twin (Patreon)

For your first bonus drawing of the month, here's one for everyone who suggested I draw a video game character's evil twin! 

I may have interpreted the suggestion somewhat liberally, since Mario-mustachioed versions of other characters are not actually twins, but rather, the original character themselves after being horribly possessed by the plumber's undead hat. (As seen in the upcoming Mario Odyssey.) But the idea of Mario getting into his old rival's head and getting up to no good seemed close enough, thematically, at least to me! (Also I just thought it was pretty funny.)