Satsuki Asuka, also known as Phoebe Peeper in English adaptations, is Christopher "Chris" Peeper's mother and the spouse of Professor Fred Peeper. Within the Anime Oyako Gekijou reboot narrative, she takes the place of the original character Joy Pepper. Her cheerful and optimistic personality shines through, marked by an eagerness to explore Christianity and biblical teachings despite her own lack of religious background. She embodies independence and a directness in expressing her viewpoints.

She maintains strong family bonds, residing with her husband and son. Her narrative role involves providing domestic stability while Chris embarks on time-travel adventures. Loyal in her friendships, she readily offers support and assistance to peers facing challenges. Her determination drives persistent efforts towards self-improvement and creating positive impacts within her social circle.

No concrete information exists regarding her presence or development in other seasons, films, OVAs, or spin-off media beyond this core reboot portrayal.