Monster cast is including:
Hidenobu Kiuchi as Dr. Kenzou Tenma (voice) (74 episodes), Mami Koyama as Eva Heinemann (voice) (74 episodes), Mamiko Noto as Nina Fortner (voice) (74 episodes), Junko Takeuchi as Dieter (voice) (74 episodes), Tomokazu Seki as Karl Neumann (voice) (74 episodes), Shiho Kawaragi as Wolfgang Grimmer (voice) (74 episodes), Tsutomu Isobe as Inspector Heinrich Lunge (voice) (74 episodes), Hiroshi Arikawa as Richard Braun (voice) (74 episodes), Yasuyoshi Hara as Dr. Becker (voice) (74 episodes), Kazuo Kumakura as Akanbou (voice) (74 episodes), Nozomu Sasaki as Johan Liebert (voice) (74 episodes), Nobuyuki Katsube as Roberto (voice) (74 episodes)