Gatchaman Fighter or Gatchaman F (科学忍者隊ガッチャマンF(ファイター), Kagaku Ninjatai Gatchaman Faitā, Science Ninja Team Gatchaman Fighter) is the direct sequel to Gatchaman II. In the continuing saga, a surviving fragment of Leader X mutates into Leader Z, and recruits megalomaniac Count Egobossler to create an army to conquer the world. In order to defeat this new enemy, the Science Ninja Team Gatchaman return with stronger weapons.