Athena & Robikerottsu (アテナ&ロビケロッツ) was Hello! Project unit consisting of Niigaki Risa, Mitsui Aika, Nakajima Saki and Okai Chisato. They sing the opening and ending theme song for the anime Robby & Kerobby. 勝利のBIG WAVE!!! (Romaji: Shouri no BIG WAVE!!!; English: Victory's Big Wave!!!) is the first single. Members * 新垣里沙 (Morning Musume.) * 光井愛佳 (Morning Musume.) * 中島早貴 (°C-ute) * 岡井千聖 (°C-ute) Read more on Last.fm