Dr. Luke may not be a household name...yet. But you do know his work: Kelly Clarkson's "Since U Been Gone", Kesha's "Tik Tok" and Katy Perry's "California Girls". His real name is Lykasz Gottwald, and after rumors that Will.I.Am is out, it looks like Dr. Luke may just be taking the hot seat on 'American Idol'

Jennifer Lopez and Keith Urban have been confirmed to be signed on as judges for Season 13, but who would you like to see?

Carrie Underwood? Toby Keith? How about Toby Keith and the Dixie Chicks on the same panel. Haha...blood bath.

Dr. Luke + Ke$ha / Getty Images