Ayaka Sasaki is a Japanese actress and voice actress who is also known as a member of the idol group Momoiro Clover Z. Born on June 11, 1996, in Kanagawa Prefecture, Japan, she began her career in entertainment as a child, later rising to fame in the late 2000s as part of the popular girl group. Her entry into voice acting came with a major role in a high-profile theatrical release. Sasaki made her debut as a voice actress by playing the dual role of Saori Kido and the goddess Athena in the 2014 full-length CG anime film Saint Seiya: Legend of Sanctuary. This film, which adapts the popular Sanctuary arc from Masami Kurumada's original manga, marked her first full role as a voice actress.

Following this debut, Sasaki continued to take on voice roles in several prominent anime film franchises. She voiced a character named Tenshi in the 2015 film Dragon Ball Z: Resurrection F, contributing her voice to the long-running Dragon Ball series. In 2018, she appeared in the Crayon Shinchan film Crayon Shinchan: Bakumori! Kanfe Boizu Ramen Tairan, where she voiced Kuroguro Clover Z, a character whose name references her own idol group. Her other film voice credits include a role in the 2019 film Shimajiro to Ururu no Heroland. On television, Sasaki has also worked as a voice actress, appearing in two episodes of the anime series Kotaro Lives Alone in 2021, providing the voice for a character named Arin.

While her work as a voice actor is notable, her career is primarily defined by her long-standing membership in Momoiro Clover Z. Her casting as Athena in Saint Seiya: Legend of Sanctuary was highlighted as a significant step for her as a performer, creating a link between her fanbase as an idol and the audience of the classic anime franchise. Beyond her voice acting and music career with Momoiro Clover Z, Sasaki has also appeared as a live-action actress in films such as Shirome (2010) and Maku ga agaru (2015).