Purple Fury is a move created by Vegeta. He created this move to match Goku's Kaio-ken attack. It is pretty much the same, except Vegeta gives off a raging blast of purple. The technique was created when Vegeta, and Goku were sparring, and Vegeta was losing his anger exploded (as usual), but this time his anger created a purple glow around him. Vegeta felt incredible power, and his movements were crazy, and rapid. Vegeta later named the attack Vegeta's Kaio-ken, which everyone thought was stupid, so eventually Purple Fury was born!