Steel Jeeg(鋼鉄ジーグKōtetsu Jīgu), more commonly known as Kotetsu Jeeg or Koutetsu Jeeg, is a super robot anime and manga series created by manga artists Go Nagai and Tatsuya Yasuda. The TV anime was produced by Toei Doga. It was first broadcast on Japanese TV in 1975. The series lasted for 46 episodes. Steel Jeeg also ran as a manga in several children's publications. A sequel series called Kotetsushin Jeeg (which appears to take place 50 years after the original show) aired on the satellite network WOWOW, beginning April 5, 2007.