Minami Takayama
— Moomintroll (voice)
Ryūsei Nakao
— Sniff (voice)
Rei Sakuma
— Little My (voice)
Takehito Koyasu
— Snufkin (voice)
Mika Kanai
— Snorkmaiden (voice)
Akio Ōtsuka
— Moominpappa (voice)
谷育子
— Moominmamma (voice)
平田康之
— Snork (voice)
Masato Yamanouchi
— Muskrat (voice)
矢田稔
— Hemulen (voice)
Takaya Hashi
— Police Inspector (voice)
Sumi Shimamoto
— Fillyjonk (voice)
小林優子
— Mymble (voice)
Fumihiko Tachiki
— Astronomer #1 (voice)
池田一臣
— Astronomer #2 (voice)
石野竜三
— Fubble (voice)