This Master of evil is always dressed as a deranged clown, relying on bright colors like green or purple. Also depending on what universe it is The Joker either has bleached white skin or is wearing makeup combined with green hair and red lips to add to the deranged clown look.
The reason that the Joker is viewed as the most evil super villain is that he uses the most unpredictable methods. Everything he does is based off his own sick and twisted logic. The Joker has no want for money all he wants its to prove that there is no need for order and organization and to have complete and total anarchy is Gotham. The Joker however is a very intelligent man and this is the main reason he evades capture from the authorities and Batman, along with his twisted mind games.
It's not about the money, its about sending a message... Everything Burns
Lets put a smile on that face
I believe what doesn't kill you just simply makes you... stranger
Why would I kill you? What would I do without you?
I'm like a dog chasing cars,I wouldn't know what to do if I caught one, you know I just do... things