Warner Bros. apparently banned Diddy from being the Joker for Halloween
Sean "Diddy" Combs is now in a feud with Warner Bros. over his Halloween costume

You ever have a Halloween costume so good you get a cease and desist from a Hollywood studio? It’s rare, but it happened to Sean “Diddy” Combs. Last year, Diddy dressed as such an accurate Joker (in the style of Heath Ledger’s take on the character for Christopher Nolan’s Dark Knight trilogy) that Warner Bros. took issue with it, the rapper revealed on Jimmy Kimmel Live!
“Last year, I was the Joker, and I actually got a letter from the studio that I can no longer be the Joker,” Diddy explained. “They said it broke their trademark, that I did it too good. I swear I have this letter. I swear to God. … From Warner Bros.” After Kimmel encouraged him to dress as Joker again, Diddy addressed WB directly: “So tomorrow… Warner Bros. lawyers, can you see me? Put this camera on right here. The head of legal: Tomorrow, watch what I do.”
Diddy also addressed the situation on Instagram, holding what he claimed to be the legal papers he was sent to stop him from dressing up as the Clown Prince of Crime. “To the motherfucker that took all this time… to tell me not to be the Joker, I wanted to tell you, you win, I’m not gonna be the Joker. Just because your ass had enough time to fuck up my motherfucking Halloween,” he said, before teasing his fans to “stay tuned.”