Host
Ryan Seacrest
Judge
Randy Jackson
Katy Perry
Self - Judge
Paula Abdul
Self - Judge
Simon Cowell
Luke Bryan
Lionel Richie
Self - Judge
Jennifer Lopez
Self - Judge
Keith Urban
Self - Judge
Harry Connick Jr.
Self - Judge
Kara DioGuardi
Self - Judge
Steven Tyler
Self - Judge / Self
Ellen DeGeneres
Self - Judge / Self / Self - Mentor
Mariah Carey
Self - Judge
Nicki Minaj
Self / Self - Guest Performer
Kimberley Locke
Self - Host
Brian Dunkleman
Self / Self - Contestant
Katie Stevens
Self - Contestant / Self
Todrick Hall
Self
Chris Daughtry
Self - Guest Host / Self - Guest / Self - Audience Member
Clay Aiken
Self / Self - Musical Guest
Jennifer Hudson
Self - Contestant
Ada Vox