Full cast of How Not to Summon a Demon Lord

Masaaki Mizunaka

Sakamoto Takuma (voice)

22 episodes

Yu Serizawa

Shera L. Greenwood (voice)

22 episodes

Azumi Waki

Rem Galeu (voice)

22 episodes

Yumi Hara

Alicia Crystella (voice)

22 episodes

Atsumi Tanezaki

Klem (voice)

22 episodes

Rumi Okubo

Sylvie (voice)

12 episodes

Emiri Kato

Edelgard (voice)

12 episodes

Sayaka Senbongi

Celestine Baudelaire (voice)

12 episodes

Ryotaro Okiayu

Emile Bichelberger (voice)

12 episodes

Akira Ishida

Keera L Greenwood (voice)

12 episodes