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Olivia Olson

Olivia Rose Olson (born May 21, 1992) is an American actress and singer-songwriter, mostly known for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Marceline the Vampire Queen in Adventure Time. She also played the character of Joanna in the 2003 film Love Actually and its 2017 short sequel Red Nose Day Actually.

Filmography

2003
Love Actually

as Joanna Anderson

Movie
2023
Adventure Time: Fionna & Cake

as Marceline (voice)

TV Show
2010
Adventure Time

as Marceline the Vampire Queen (voice)

TV Show