Olson has appeared as a singer and actress on television shows and in live theatre, including Comedy Central Stage, the HBO Theater, and The Fake Gallery. She is of Afro-Jamaican descent through her biological father. Olson graduated from Agoura High School in 2010. She lives with her father, Martin Olson, mother Kay Olson, and brother Casey Olson. Olson was adopted at birth and raised in Los Angeles, California. She also played the character of Joanna in the 2003 film Love Actually and its 2017 short sequel Red Nose Day Actually.Īlong with this, she is also a writer, having written the Boom! Studios graphic novel Marcy and Simon, co-authored Adventure Time: The Enchiridion and Marcy's Super-Secret Scrapbook, and contributed writing to the best-seller Adventure Time Encyclopedia' for Cartoon Network. Olivia Rose Olson (born May 21, 1992) is an American actress, singer-songwriter, and writer, largely known for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Marceline the Vampire Queen in Adventure Time.
