A totally awesome article of clothing. Almost anybody who wears a cape will look cool, and anybody who is badass can greatly benefit from wearing either a cape, cloak, or trenchcoat, and of course, having long hair. Having a sword would help, but you'll probably get arrested for that.
That dude with the cape is so freakin' awesome. Some kid said he looked stupid, just because he doesn't dress like everybody else, but when he turned that kid into a mangled mess on the floor, he looked totally badass. Nobody messes with him now! :)