Commander Zeb Nebula (voiced by Adam Carolla) – The Space Rangers' commander and Buzz's superior, whose left leg was replaced by a pegleg-like plasma cannon. He is short-tempered and constantly speaks with a loud voice. He has a robotic desk that forces him to do his paperwork. He hates to do so though and therefore signs forms without reading them. By doing so, he inadvertently gave permission for the creation of XR, who therefore considers Nebula a father (He thought the form was the LGMs' vacation request). Nebula is frequently irritated by this, though he gives XR his due for his successes.