J.G. Quintel

Mordecai / Hi-Five Ghost (voice)

William Salyers

Rigby (voice)

Sam Marin

Benson / Pops / Muscle Man (voice)

Mark Hamill

Skips (voice)

Jason Mantzoukas

Mr. Ross (voice)

David Koechner

Principal Dean (voice)

Roger Craig Smith

Jablonski / Frank Smith / Fast Food Guy (voice)

Ali Hillis

Ship Computer / Rigby's Mom (voice)

Kurtwood Smith

Gene (voice)

Eddie Pepitone

Sherm (voice)

Paul F. Tompkins

Gino (voice)

Fred Tatasciore

Father Time / Security Guard / Additional Voices (voice)