He is an actor from America who also has a YouTube show, The Reel Butter, but he would be best known for his personification of the Joker, from Batman, known as Harley's Joker. In fact, some have attributed this man to be The Definitive Joker Cosplay.
Anthony Misiano describes his costume as inspired by the classic Joker and it took 9 months to fully assemble. He also spends 3 hours doing his make up with prosthetics before his costume is complete (I've forgotten the source for that sorry. I think it was in the SDCC interviews).
Anyway, the point of all this introduction is to highlight the fact that there is a not-for-profit webseries on the way, probably in post production now, and from the teaser trailers it looks so amazing! I believe that the series is going to be something like how Batman and Mr. J initially met.
The summary of the project can be found here.
I actually cannot wait for this!