Omi Minami as Shimajiro Shimano

Miki Takahashi as Mimirin / Hana Shimano

Takumi Yamazaki as Torippii / Lion Police Officer

Saori Sugimoto as Nyakkii Momoyama

Kikuko Inoue as Shimajiro's Mother

Chafurin as Shimajiro's Father

Sayu Kubota as Sea Fairy

Naoto Nojima as Starfish Man

Aki Sasamori as Zota

Akiko Toda as Buta

Minoru Inaba as Gaogao-San

Nobuo Tobita as Kankachi

Kazumasa Katsura as Gigi

Tatsuya Gashûin as Hermit Crab

Yuko Kobayashi as

Shinpachi Tsuji as

Lis Kurniasih as Shimajiro

Leni Marlina Tarra as Mimi-Lynne

Hardi Fadhillah as Flappie

Jessy Milianty as Nikki

Oh Sang-so as Hobi

Song Young-in as Benny

Lee Woo Lee as Perro

Shin Jung-hoon as Rynh

Sang Woo Park as Dr. Leo

Bae Jin Young as

Xu Shuxuan as Qiaohu

Yang Kaikai as

Liu Xihua as

Feng Jiade as

Shinobu Adachi as

Akiko Toda as

Akemi Obata as

Ai Fukada as

Shiori Matsuda as

Makiko Yone as

Bae Jinhong as Hobi

Kim Duri as Nanyi