Built for BattleJapanese warriors have to protect their emperor. Green Lanterns have to protect their sector. Well, meet the best of both worlds, the POP! Heroes: Imperial Palace – Green Lantern Vinyl Figure. This Funko POP! Hero depicts John Stewart of the Green Lantern Corps. John has been an architect, a marine sniper, oh, and the leader of the most powerful cops in the universe. Battle alongside John as he undertakes his new role, Imperial Guard.