Athena & Robikerottsu

Athena & Robikerottsu (アテナ&ロビケロッツ) was a Hello! Project unit consisting of Niigaki Risa, Mitsui Aika, Nakajima Saki, and Okai Chisato.
==History==
 
On September 12, 2007, Athena & Robikerottsu was officially announced as a new unit that would sing the theme song "Shouri no BIG WAVE!!!" for the anime Robby and Kerobby, in which Niigaki Risa voices the character Athena. Niigaki had taken over the role after Tsuji Nozomi went on maternity leave, and had joined the group with Mitsui Aika, Nakajima Saki, and Okai Chisato as a result.
On October 8 and 9, 2007, Athena & Robikerottsu performed "Shouri no BIG WAVE!!!" for the first time at Morning Musume "Acchii Chikyuu wo Samasunda." Bunkasai 2007 in Yokohama.
On November 14, 2007, "Shouri no BIG WAVE!!!" was released as a single.
On January 2, 2008, Athena & Robikerottsu performed "Seishun! LOVE Lunch" for the first time at Hello! Project 2008 Winter ~Wonderful Hearts Nenjuu Mukyuu~.
On February 13, 2008, "Seishun! LOVE Lunch" was released as a single.
On March 30, 2008, the Robby and Kerobby anime ended, and Athena & Robikerottsu effectively disbanded.
==Members==
*Niigaki Risa (新垣里沙; L)
*Mitsui Aika (光井愛佳)
*Nakajima Saki (中島早貴)
*Okai Chisato (岡井千聖)
==Discography==
===Singles===
#[2007.11.14] Shouri no BIG WAVE!!! (勝利のBIG WAVE!!!)
#[2008.02.13] Seishun! LOVE Lunch (青春！LOVE ランチ)
===Compilation Albums===
*[2008.12.10] Hello! Project - Petit Best 9 (#10 Seishun! LOVE Lunch)
*[2008.12.10] Hello! Project - Hello! Project Special Unit Mega Best (#14 Shouri no BIG WAVE!!!)
*[2010.10.22] Various - Minna no Idol☆Collection ~TV Anime Hit Song Shuu~ (#12 Shouri no BIG WAVE!!!)
==Total Sales Count==
Year	Year Sales	Total Sales
2007	5,913 	5,913
2008	6,371 	12,284
==External Links==
* Athena & Robikerottsu discography 
*
Category:5th Generation Morning Musume
Category:8th Generation Morning Musume
Category:2007 Units
Category:C-ute
Category:Athena & Robikerottsu
Category:2008 Disbanded
Category:Robby and Kerobby
Category:Zetima