can be for anything. the difficulty or the way he looks. i'd say sephiroth and ill bet others will say the same thing too
if your going for straight out badass, sephiroth is second to only Kefka. You cant beat the maniacal thoughts of a wannabe clown who doesnt care about anything but absolute destruction of the world, even if it includes himself dying in the process.
The grand magician from mickey mouse's world of illusion on the sega megdrive, god, he was one evil b@stard.
Ron Artest - NBA Live lol jp i would have to say Ocelot from MGS3 hes cool as hell and does cool gun tricks