Ariel

Mami Koyama

Mia Kawai (voice)

小山茉美

Mykal-Michelle Harris

Ariel (voice)

Jūrōta Kosugi

Krest Saber Hargen (voice)

小杉十郎太

Taye Diggs

King Triton (voice)

Amber Riley

Ursula (voice)

Megumi Hayashibara

Kazumi Kishida/Tomomi (voice)

林原めぐみ

Elizabeth Phoenix Caro

Lucia (voice)

水谷優子

Aya Kishida (voice)

Cruz Flateau

Fernie (voice)

峰恵研

Prof. Amamoto (voice)

Gracen Newton

Flounder (voice)

平野文

Simonne (voice)

Kaneto Shiozawa

Hauser (voice)

塩沢兼人

Melissa Villaseñor

Navi (voice)

Kōichi Yamadera

Demonova (voice)

山寺宏一

阪脩

Dr. Kishida (voice)

Chiko

Nami (voice)

Hirotaka Suzuoki

Ragnas (voice)

鈴置洋孝

塩屋浩三

Researcher A (voice)

Yumi Tōma

Mother (voice)

冬馬由美

Ron Funches

Delfino (voice)

Danni Washington

Tantie Chantale (voice)