© 2026 The Couch Critic
Status
Ended
Release
1975 - 1977
Seasons / Eps
1 / 74
Streaming availability by country
We couldn't find any streaming, rent, or buy options for this content in US
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.
29 Cast Members
Kei Tomiyama
Duke Fleed / Daisuke Umon (voice)
74 Episodes
Hiroya Ishimaru
Koji Kabuto (voice)
74 Episodes
Joji Yanami
Genzo Umon / Great King Vega (voice)
74 Episodes
Chiyoko Kawashima
Hikaru Makiba (voice)
74 Episodes
Kosei Tomita
Danbei Makiba / General Gandal / Nuke / Whiter (voice)
74 Episodes
Kazuko Sawada
Goro Makiba / Lady Gandal (voice)
74 Episodes
Rihoko Yoshida
Grace Maria Fleed / Commander Marine (voice)
74 Episodes
Banjo Ginga
Science Minister Zuril (voice)
74 Episodes
Kenichi Ogata
Blaki / Bunta Arano (voice)
74 Episodes
Keaton Yamada
Akira Hayashi (voice)
74 Episodes
Nobuyo Tsuda
Hara Arano (voice)
74 Episodes
Hiroshi Otake
Boss (voice)
74 Episodes
Isamu Tanonaka
Mucha (voice)
74 Episodes
Keiichi Noda
Captain Gorman (voice)
74 Episodes
Kouko Kagawa
Commander Mineo (voice)
74 Episodes
Akira Kamiya
Ainzu (voice)
74 Episodes
Kazuko Sugiyama
Commander Kirika (voice)
74 Episodes
Toru Furuya
Kane (voice)
74 Episodes
Ryoichi Tanaka
Zuril Junior (voice)
74 Episodes
Noriko Ohara
Princess Rubina (voice)
74 Episodes
