The story revolves around Duke Fleed who is a survivor of the Vega Star, raised by Dr. Umon as his adoptive son, and known as Daisuke Umon on Earth. Years after his arrival, he's faced with the threat of King Vega and his army, who want to conquer the Earth. With his friends Koji and Hikaru (and later his kid sister Maria Grace), Duke decides to fight back using his best weapon, the almighty Grendizer.

Written by: Go Nagai & Keisuke Fujikawa & Mitsura Majima & Shozo Uehara
Cast:
Kei Tomiyama Kei Tomiyama
Duke Fleed / Daisuke Umon 
Hiroya Ishimaru Hiroya Ishimaru
Koji Kabuto 
Joji Yanami Joji Yanami
Genzo Umon / Great King Vega 
Chiyoko Kawashima Chiyoko Kawashima
Hikaru Makiba 
Kosei Tomita Kosei Tomita
Danbei Makiba / General Gandal / Nuke / Whiter 
Kazuko Sawada Kazuko Sawada
Goro Makiba / Lady Gandal 
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Also known as:
  • UFO Robo Grendizer
  • UFO robo: Gurendaizâ
  • UFO Robot Grendizer Raids
  • Grandizer
  • UFO Robo: Grendizer
  • UFO Robot Grendizer
  • Ufo Robot Goldorak
  • Goldorak
  • Δούκας Φλιντ: Ο Πρίγκιπας του Διαστήματος
  • Atlas UFO Robot
  • UFO로보 그렌다이저
  • 그랜다이저
  • Грендайзер
  • Grīndāyzar (جريندايزر)
  • جريندايزر
  • مغامرات الفضاء
  • Goldorak, Rymdfantomen