Four Part Harmony

Megumi Matsumoto

Ryuta Kodai / Maximus "Max" Taylor (voice)

Matsuri Mizuguchi

Rex Owen (voice)

Tomoko Kobashi

Malm Tatsuno / Zoe Drake (voice)

Naoya Uchida

Dr. Kenryu Kodai / Dr. Spike Taylor (voice)

Eri Komiyama

Riasu Tatsuno / Dr. Reese Drake (voice)

Tetsuo Goto

Dr. Sonoida / Dr. Z (voice)