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.
2023
as Marceline (voice)
2022
as Self
2022
as Ursa (voice)
2022
as Pegasus / Employee / Goblin (voice)
2020
as Susanne Steinem (uncredited)
2020
as Grapefruit
2020
as Vanessa Doofenshmirtz (voice)
2020
as Marceline (voice)
2019
as Devora Pizza
2019
as Jun
2019
as Guard (voice)
2019
as Jun (voice)
2019
as PizzaRave / Jun (voice)
2017
as Joanna
2016
as Bliss (voice)
2015
as Vanessa (voice)
2014
as Vanessa Doofenshmirtz (voice)
2014
as Vanessa the Twi'Lek (voice)
2013
as Pop Singer (voice)
2012
as Little Girl
2010
as Vanessa Doofenshmirtz (voice)
2010
as Marceline the Vampire Queen (voice)
2005
as Girl #1
2003
as Julia
2003
as Joanna Anderson