Cameron Monaghan has been playing versions of The Joker on Gotham for several years now. He just became the “real” Joker at the end of season 4. But we’ll never hear him be called “The Joker” or see him with his iconic green hair. Monaghan revealed why in a Twitter post this past week.

“Various hair tests. Pure green was off-limits to us (as well as the name “Joker”), a decision from high-up as they wanted to reserve these for films,” Monaghan explained. “A decision which ultimately I respect. They did not want to dilute the very lucrative brand. It allowed for creativity on our end.”

Warner Bros. hasn’t been consistent with allowing their movie characters to be on TV. They famously made Arrow remove their version of the Suicide Squad and Deathstroke once there were plans for those characters in the movies. The Flash has his own TV series despite being in the movies, and even Superman has made appearances on Supergirl.

What do you think of the decision to keep the name “The Joker” and green hair away from Gotham? Let me know in the comments below.