Reiko Senō was a Japanese actress and voice actor born on July 1, 1933, in Tokyo. Her real name was Reiko Tamaki. She began her career in the performing arts on stage, working with several theater companies before joining the renowned剧团 Theatre Echo in 1956, where she remained an active member for the rest of her career. Senō was also a pioneer in early Japanese television, appearing in a live commercial for the Toshiba Sunday Theater program in 1961.

Senō is best known for her warm,亲切的 vocal performances, often playing maternal or grandmotherly characters in classic anime series. Her most iconic role was as the title character, Spoon oba-san (Mrs. Spoon Bjorn), in the 1983 anime series Mrs. Pepperpot. This role cemented her status as a beloved voice for generations of viewers.

Her extensive list of anime voice roles includes many of the characters specified in the query. She voiced Kyōko Kagami, the mother of the protagonist, in the first series of the magical girl anime Himitsu no Akko-chan. In the series Ryu, the Cave Boy, she played the role of Ryū's Mother, and in Fables of the Green Forest, she was the voice of Rocky's Mother. Her other notable credits include the role of Marie Rostain in Paris no Isabelle and Mitsu Ahagon in Tsushimamaru: Sayonara Okinawa.

Beyond these roles, Senō's career spanned a wide variety of genres and formats. She provided voices for numerous other anime, such as the grandmother in the 1972 film Panda! Go, Panda!, a role in the 2008 series true tears, and characters in Astro Boy and Moomin. She was also highly active in voice dubbing for foreign films and television dramas. Her dubbing work included providing the Japanese voice for Rachel Lynde in various versions of Anne of Green Gables and roles in films such as Cocoon and Scarface.

In addition to animation and dubbing, Senō had a significant presence in tokusatsu, the Japanese live-action special effects genre. During the 1970s and 1980s, she provided the voices for various creatures and characters in series like Kamen Rider X, Kamen Rider Stronger, and Taiyo Sentai Sun Vulcan. Reiko Senō passed away on August 8, 2017, at the age of 84, leaving behind a rich legacy as a versatile and pioneering figure in the Japanese voice acting industry.