Career
Among her roles was the voice of Weed for the new 2001 Bill and Ben show. She was a voice of Dennis" mum and Matilda in the 1996 Dennis the Menace television series and Mistress Bird in The Adventures of Paddington Bear.
Karpf also featured in several audiobooks, among them A Creepy Company who was praised as being "a marvelous performer whose storytelling talents keep the listener spellbound." She is known for being the voice of the Ferrero Rocher commercial line, "Monsieur, with these Rocher, you"re really spoiling us."
She has numerous minor roles in video games from various franchises based on other media, including James Bond and Star Wars.
She also did the voice over for the role of Monica the mother of Saint Augustine in the movie Restless Heart (Ignatius Press), Kristina Boaz in the 2003 video game Tomb Raider: The Angel of Darkness, the cat Alvina in 2011 video game Dark Souls, and the elf Fiona in the 2014 video game Dragon Age: Inquisition.