I agree with a few posters here, my first however...
WOULD BE THE KING FROM ZELDA CD-I, HE'S FRIGGIN BADASS AND YOUR NOT IF YOU DON'T AGREE!
I'll also go with Brock Samson from Venture Bro's,
Johnny Bravo ;)
Zim from Invader Zim
Seban from Harvey birdman attorney at law :P
And Frylock from Aqua Teen Hunger Force xD
From 0 to KICKASS in .stupid seconds.