How did the Empire rise to power? What is the origin of the Death's Head Guard? Who are the Spikes? Learn the answers to these questions, plus many more revelations, in the pages of the PLANET HULK: GLADIATOR GUIDEBOOK – an essential companion to Greg Pak's top-selling PLANET HULK storyline! Featuring profiles on the Hulk, the Silver Surfer and the Brood, the GLADIATOR GUIDEBOOK presents a detailed look into the planet Sakaar and its many inhabitants!