- Megumi Oohara (Nobita Nobi (voice))
- Wasabi Mizuta (Doraemon (voice))
- Yumi Kakazu (Shizuka Minamoto (voice))
- Tomokazu Seki (Suneo Honekawa (voice))
- Subaru Kimura (Takeshi Gouda (voice))
- Chiaki (Dorami (voice))
- Kotono Mitsuishi (Tamako Nobi (voice))
- Yasunori Matsumoto (Nobisuke Nobi (voice))
- Shihoko Hagino (Hidetoshi Dekisugi (voice))
- Wataru Takagi (Sensei (voice))
- Vanilla Yamazaki (Jaiko Goda (voice))
- Hideyuki Tanaka (Mr. Honekawa (voice))
- Minami Takayama (Mrs. Honekawa (voice))
- Miyako Takeuchi (Mrs. Goda (voice))
- Shinpachi Tsuji (Mr. Goda (voice))
- Aruno Tahara (Mr. Minamoto (voice))
- Ai Orikasa (Michiko Minamoto (voice))
- Katsuhisa Houki (Kaminari / “Mr. Rumbleton” (voice))
- Sachi Matsumoto (Sewashi Nobi (voice))
Doraemon — S1E257
Episode: A Happy Mermaid Princess
Air Date: 2009-08-14
Runtime: 25 min