Devilman tai Yami no Teio (デビルマン対闇の帝王) or Devilman vs Hades is a Japanese comic book series written and drawn by Team Moon based on the original works of Japanese cartoonist Go Nagai. The cartoon is a crossover between Devilman and Great Mazinger (with characters from Mazinger Z) in commemoration of the 40th anniversary of both Devilman and Mazinger Z.