Stacey Gregg is a British actress born on April 7, 1946, in Marylebone, London, England. Her career has spanned both live-action and voice acting for film and television, with work in Britain and North America. She began her on-screen career in the 1960s, appearing in series such as Batman and Tarzan, and the film Pajama Party. In addition to her performances under her own name, she has also been credited using the pseudonyms Stacey Maxwell, Stacy Gregg, and Shirley Richardson.

Gregg is particularly well-regarded in the realm of anime dubbing for her work on English-language versions produced in the 1980s and 1990s. One of her most recognized roles is as the voice of the titular character, Eiko "A-Ko" Magami, in the 1986 film Project A-ko. She also voiced the character Cathy in the film Venus Wars and provided voices for the OVA series Tokyo Babylon, where she played both Mirei Hidaka and a young Subaru Sumeragi. Her other anime credits include the role of Linna Yamazaki in the Manga UK dub of Bubblegum Crash and a part in Vampire Princess Miyu.

A significant part of her voice acting career includes the beloved series Tanoshii Moomin Ikka, known in English as Moomin. In this production, she voiced multiple characters, demonstrating her vocal range. As the user query notes, she played the role of Mrs. Fillyjonk. Her other roles in the series included Bob, the Mymble, Ninny, the character Thingumy, and Too-Ticky. This versatility extended to other animated works outside of anime, such as providing voices for the British series The Animals of Farthing Wood.