Some supervillains like to hide their evil, or masquerade as good guys. Not Mojo Jojo, archenemy of the Powerpuff Girls. This malevolent monkey makes no bones about his villainous bona fides, as he introduces himself on this terrifying T-shirt: "I am bad, I am evil, I am. Mojo Jojo!" There's definitely something to be said for knowing exactly who you are.