Steve Whitmire

Kermit the Frog, Beaker, Rizzo the Rat, Statler, Bean Bunny, Foo-Foo

Eric Jacobson

Miss Piggy, Fozzie Bear, Animal, Sam the Eagle

Selena Gomez

Self

Demi Lovato

Self

Miley Cyrus

Self

Cole Sprouse

Self / Cody Martin

Dylan Sprouse

Self / Zack Martin

Brenda Song

Self

Phill Lewis

Self

Ashley Tisdale

Sharpay Evans

Billy Ray Cyrus

Self

Jason Earles

Self

Jake T. Austin

Self

David Henrie

Self

Moisés Arias

Self

Jason Dolley

Self

Sabrina Bryan

Self

Kiely Williams

Self

Adrienne Bailon-Houghton

Self

Joe Jonas

Self

Nick Jonas

Self

Kevin Jonas

Self

Dave Goelz

Gonzo the Great, Zoot, Waldorf, Dr. Bunsen Honeydew, Pancake the Water Buffalo

Bill Barretta

The Swedish Chef, Pepe the King Prawn, Dr. Teeth, Rowlf the Dog, Bobo the Bear

David Rudman

Scooter, Janice, Camilla the Turkey

Matt Vogel

Camilla the Chicken, Lew Zealand, Crazy Harry, Robin the Frog, Floyd Pepper (voice)

Noel MacNeal

Sweetums, Bear

Jerry Nelson

Floyd Pepper (voice only in the first episode)

Bruce Lanoil

Kermit the Frog (assistant puppetry in "Bop to the Top")