Britney Spears Was Her "Pop Star Alter Ego" For "The Bubble" Apatow's "The Bubble" character, a viral TikTok dancer named Krystal Kris, was somewhat inspired by pop star sensation and dance legend Britney Spears. "I was told I had to live up to Britney standards, which is not possible," Apatow revealed during a cast interview on "The Kelly Clarkson Show." "We all had our different pop star alter egos. I don't even think [the other cast members] knew they had them." Keegan-Michael Key said he later found out that his alter ego was Patti LaBelle. Image Source: Getty / Vivien Killilea / Stringer