Self - Host

Ryan Seacrest

Host

Brian Dunkleman

Katy Perry

Judge

Randy Jackson

Luke Bryan

Judge

Paula Abdul

Lionel Richie

Self - Judge

Simon Cowell

Self - Judge / Self - Performer

Jennifer Lopez

Self - Judge

Keith Urban

Self - Judge

Harry Connick Jr.

Self - Judge

Kara DioGuardi

Self - Judge

Steven Tyler

Kelly Clarkson

Self - Judge / Self

Ellen DeGeneres

Self - Contestant / Self - Guest

Tamyra Gray

Self - Judge / Self / Self - Mentor

Mariah Carey

Nikki McKibbin

Self - Judge / Self - Performer

Nicki Minaj

Justin Guarini

Self - Contestant / Self / Self - Auditionee

Phillip Phillips

RJ Helton

Self / Self - Guest Performer / Self - Contestant

Kimberley Locke

Self / Self - Contestant

Katie Stevens

Self - Contestant / Self

Todrick Hall

Self / Self - Contestant / Self - Musical Guest

Jennifer Hudson

Self - Contestant / Self

Peter Frank

Self / Self - Contestant

Chris Daughtry

Self / Self - Contestant

Jon Peter Lewis

Self - Guest Host / Self - Contestant / Self - Guest

Clay Aiken

Self / Self - Performer / Self - Guest

Carrie Underwood