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.
Mordecai / Hi-Five Ghost (voice)
Rigby (voice)
Benson / Pops / Muscle Man (voice)
Skips (voice)
Eileen (voice)
Mr. Ross (voice)
Principal Dean (voice)
Jablonski / Frank Smith / Fast Food Guy (voice)
Ship Computer / Rigby's Mom (voice)
Gene (voice)
Sherm (voice)
Gino (voice)
Father Time / Security Guard / Additional Voices (voice)
Techmo / Brit / Commander / TV Game (voice)
Margaret (voice)
