 Miroslava ŠafránkováThe Little Mermaid | The Little Mermaid |
 Radovan LukavskýKing of All Seas | King of All Seas |
 Petr SvojtkaPrince of the Southern Empire | Prince of the Southern Empire |
 Marie RosůlkováGrandmother | Grandmother |
 Milena DvorskáWitch | Witch |
 Libuše ŠafránkováPrincess from the Neighboring Empire | Princess from the Neighboring Empire |
 Jiří OrnestPrince's Aide | Prince's Aide |
 Dagmar PatrasováLittle Mermaid's First Sister | Little Mermaid's First Sister |
| JJiřina KrejčíkováQueen of the Blue Sea | Queen of the Blue Sea |
| AAlexej OkuněvKing of the Ice Sea | King of the Ice Sea |
 Jaroslava SchallerováQueen of the Ice Sea | Queen of the Ice Sea |
 Milan HeinKing of the Yellow Sea | King of the Yellow Sea |
 Jana ŠvandováQueen of the Yellow Sea | Queen of the Yellow Sea |
| JJan J. VágnerPrince of the Sea of the Setting Sun | Prince of the Sea of the Setting Sun |
| JJiří SvětlíkKing of the Black Sea | King of the Black Sea |
 Andrea ČunderlíkováQueen of the Black Sea | Queen of the Black Sea |
| PPetr SkarkeKing of the Yellow Sea (voice) | King of the Yellow Sea (voice) |
 Petr SvobodaPrince of the Sargasso Sea | Prince of the Sargasso Sea |
| SShizuka IshikawaOriental Princess | Oriental Princess |
| DDana KubálkováEuropean Princess | European Princess |
| VVenuše SamešováBlack Princess | Black Princess |
 Milena SteinmasslováHispanic Princess | Hispanic Princess |
| JJaroslav HeydukCeremonial of the Neighboring Empire | Ceremonial of the Neighboring Empire |
| VVladimír PospíšilShip Captain | Ship Captain |
 Jindřich NarentaCounselor | Counselor |
 Hana TalpováQueen | Queen |
| JJosef VondráčekOld Fisherman | Old Fisherman |
| KKarel AnderleFencer | Fencer |
| PPavel VlasákFencer | Fencer |
| JJiří FlíčekGuest on the Golden Ship | Guest on the Golden Ship |
