Star Fighters: Space Wars by Max Chase (author)

Having escaped Xion, the crew of the Phoenix need to find a way home. But before they can locate the Milky Way, they see a monstrous object looming through space towards them! It’s the legendary Extractor, destroyer of planets – and it’s on its way to destroy Xion! Now Peri and his friends are faced with a dilemma. Should they help to save the aliens who just tried to kill them? Like a true hero, Peri decides to use his half-human, half-robot skills to try and rescue the doomed planet. Only then can they go home…