Tom Kenny

Ham / Reporter #1 (voice)

Zack Shada

Comet (voice)

Patrick Warburton

Titan (voice)

Cheryl Hines

Luna (voice)

Carlos Alazraqui

Houston / Piddles The Clown / Camera Guy (voice)

Laura Bailey

Kilowatt / Computer Voice (voice)

John DiMaggio

Zartog / Human #1 / Human #2 (voice)

Stanley Tucci

Senator (voice)

Patrick Breen

Dr. Bob (voice)

Jane Lynch

Dr. Poole (voice)

Omid Abtahi

Dr. Jagu / Reporter #2 (voice)

Noreen Reardon

Alien #1 (voice)

David Michie

Alien #2 (voice)