Manaka Iwami

as Maquia (voice)

Miyu Irino

as Ariel (voice)

Yuuki Sakurai

as Ariel as a Child (voice)

Ai Kayano

as Leilia (voice)

Yuki Kaji

as Krim (voice)

Yoshimasa Hosoya

as Lang (voice)

Rina Sato

as Mido (voice)

Yoko Hikasa

as Dita (voice)