After a high school lab experiment goes horribly wrong, Mordecai and Rigby must go back in time to battle an evil volleyball coach in order to save the universe — and their friendship.
as Mordecai / Hi-Five Ghost (voice)
as Rigby (voice)
as Benson / Pops / Muscle Man (voice)
as Skips (voice)
as Eileen (voice)
as Mr. Ross (voice)
as Principal Dean (voice)
as Jablonski / Frank Smith / Fast Food Guy (voice)
as Ship Computer / Rigby's Mom (voice)
as Gene (voice)
as Sherm (voice)
as Gino (voice)
as Father Time / Security Guard / Additional Voices (voice)
as Techmo / Brit / Commander / TV Game (voice)
as Margaret (voice)
