Here's my April Fools pic for you all. However, I am surprised he was not made into one seriously. Oh yea, you all probably don't know the secret of the Indigo Lanterns do you? Well allow me to fill you in.

For those of you who are familiar with Green Lantern then you all have found out about the Indigo Lantern corp. When you see an Indigo lantern, they are very calm and caring. After all, they represent compassion. So why make the Joker, one if not the most cruelest of all villains ever a candidate for holding the light of compassion? The reason is because each and every Indigo lantern is actually just a screwed up as him. That is right, pretty much all the Indigo lanterns are killers, psychopaths, terrorists,etc. The reason they are so kind and calm is because the ring seeks out those that are cruel and quells the violent intent within them. Still don't believe me? Ever read the Blackest Night Series? Blackhand's punishment was not to be killed, because that would have helped him, but instead was made into an Indigo lantern. If that is not proof, then listen to this, at one time Sinestro was made into an Indigo lantern. So as jacked up as the idea of Joker flying around with a power ring is, it would only make sense to make him an Indigo lantern.