Morrison's Dr. Seuss' The Grinch Musical character and Phoenix's Joker share more in common besides green hair. "I didn't want the Grinch to be a good dancer," he tells EW. "I took a lot from Joaquin Phoenix's performance in Joker, just going down those steps, like loose and (reveling in) abandon and just carefree and raw. I really felt like that was how the Grinch would dance," Morrison tells EW. "At first, I was like 'I don't think the Grinch dances'; it didn't feel very Grinch-y, but then I came up with that and it felt right."