Full cast of Grendizer U

Miyu Irino

Duke Fleed (voice)

13 episodes

Hiro Shimono

Koji Kabuto (voice)

13 episodes

Sumire Uesaka

Sayaka Yumi (voice)

13 episodes

Nao Toyama

Hikaru Makiba (voice)

13 episodes

Minami Tanaka

Grace Maria Fleed (voice)

13 episodes

Haruka Tomatsu

Teronna Aqua Vega / Rubina Beryl Vega (voice)

13 episodes