Sayaka Akimoto is a Japanese actress and voice actress who began her entertainment career in 2006 as a member of the successful pop music group AKB48. During her time with the group, which lasted until 2013, she served as the first captain of Team K and was also part of the sub-unit DiVA. Following her graduation from AKB48, she focused more intently on her acting career, taking on roles in television series, films, and stage productions, as well as voiceover work.

As a voice actor, Akimoto is known for providing the Japanese dub voice for the Marvel character Mantis. She has voiced this role in several films within the Marvel Cinematic Universe, including Guardians of the Galaxy, both Avengers: Infinity War and Endgame, and Thor: Love and Thunder.

In the realm of anime and related live-action hybrid projects, Akimoto voices the character Izumi Watanuki in the 2021 series Aikatsu! Planet. This series is part of the larger Aikatsu! franchise, and her character serves as the manager at the Starlet Promotion agency, guiding the main characters in their idol activities. The project combines live-action segments with animated sequences, with Akimoto providing the voice for her character. Her involvement in this franchise represents a connection to the broader world of idol-themed entertainment, tying back to her own history in the idol industry.