Racist Mario

Mario is the titular antagonist of the hyper-violent youtube movie "Racist Mario" and is a prime example of a "troll humor" villain designed to be over-the-top in every aspect of his character, providing a gory spectacle that some find hilarious and others shocking.

Basic Story
The context of the movie is Mario going completely insane and brutally murdering the other racers in a Mario Kart style tournament, apparently enraged at the inclusion of non-Nintendo characters in the race.

Mario starts by killing the non-Nintendo characters such as Anakin Skywalker (from Pod Racers) and Knuckles, then goes on to brutally kill Yoshi, Donkey Kong and Sonic before trying to kill Luigi - only for Kratos to kill Luigi instead, the demigod pursuing Mario in an absurd death-race style fight.

Mario tries to kill Kratos with a machinegun but fails, so resorts to tearing off Toad's head and using it as a "mushroom" to grow into a gargantuan form which he tries to use to kill Kratos with fireballs - however Kratos uses quick-time events to overpower the Mega Mario and slays him, in the end Kratos departs with Mario's head impaled on a stake and Peach as his "prize".

In addition to Mario's insane rampage it is revealed he was a violent abuser to Peach, who had a black eye and said Mario took "everything" too serious.