Satou Ayano (佐藤綾乃)
- Nickname: Ayanon (あやのん)
- Birthday: January 7, 1995
- Blood type: A
- Zodiac: Cancer
- Height: 149.8cm
- Favorite Subjects: Maths, science, P.E.
- Looks Up To: Natsuyaki Miyabi
Satou Ayano joined Hello! Pro Egg in June 2009, she debuted at the June 2009 ~Nakano STEP!~ concert. She first appeared as a member in the April 2009 issue of De☆View and was introduced at the 2009 Hello! Project Shinjin Kouen 4gatsu ~Yokohama HOP!~ concert on April 4, 2009.
On March 3, 2011 it was announced that she would be part of a dance cover group called UFZS that represents Up Front and womens magazine Josei Jishin.
On March 10, 2011 it was announced that Satou Ayano, alongside Kitahara Sayaka, Arai Manami and Sekine Azusa, had completed their training.
- She has loved to sing since she was little.
- Sato first appeared in an issue of “De*but” magazine.
- She performed a Buono! song for her audition.
- Ayano appeared as a backup dancer in the PV for Mano Erina’s seventh major single Onegai Dakara….
- She is good friends with fellow Hello! Pro Egg members Takeuchi Akari and Fukumura Mizuki.
- Hello! Pro Egg (2009 – 2011)
- UFZS (2011-)