Full cast of The Holy Grail of Eris

Kana Ichinose

Constance Grail (voice)

12 episodes

Sayumi Suzushiro

Scarlett Castiel (voice)

12 episodes

Yohei Azakami

Randolph Ulster (voices)

12 episodes

Mao Ichimichi

Lily Orlamunde (voice)

12 episodes

Maaya Uchida

Cecilia Adelbide (voice)

12 episodes

Natsuki Hanae

Enrique Adelbide (voice)

12 episodes

Jun Fukuyama

Dominic Harmsworth (voice)

12 episodes