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)

Miyuki Sawashiro as Racine (voice)

Tomokazu Sugita as Izor (voice)

Misaki Kuno as Medmel (voice)

Hiroaki Hirata as Barlow (voice)

Jo Bin as Lang as an Adolescent (voice)

Yuki Kurimoto as Dita as a Child (voice)

Junnosuke Shishido as Deol as a Child (voice)

Taichi Iwakawa as Ariel as a Baby (voice)

Hiroshi Iwasaki as King of Mezarte (voice)

Keisuke Komoto as Prince Hazel (voice)

Shunsuke Sakuya as Darel (voice)

Miyako Ito as Old Lady (voice)

Mayumi Asano as Proprietress (voice)

Takehiro Hasu as General Store Owner (voice)

Yuuya Uchida as King of Baiera (voice)

Ai Maeda as Millia (voice)

Hiroki Matsukawa as Doctor (voice)

Ryota Iwasaki as Hyke (voice)

Daisuke Motohashi as Riko (voice)

Masaaki Mizunaka as Jack (voice)

Junichi Yanagita as Eido (voice)

Kouji Kawakami as Government Minister (voice)

Kenta Sasa as Government Minister (voice)

Miyuri Shimabukuro as Shrine Maiden (voice)

Shogo Yano as Iorph Man (voice)

Jun Kasama as Soldier (voice)

Hayato Fujii as Soldier (voice)

Ryunosuke Watanuki as Soldier (voice)