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Acting
May 21, 1992
Los Angeles, California, USA
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.

Marceline / Celine (voice)
2023

Marceline (voice)
2023

Self
2022

Ursa (voice)
2022

Pegasus / Employee / Goblin (voice)
2022

Ursa / Young Cassi (voice)
2022

Ursa / Voice on TV (voice)
2022

Pegasus (voice)
2022

Susanne Steinem (uncredited)
2020

Grapefruit
2020

as Marceline / Celine (voice)

as Marceline (voice)

as Self

as Ursa (voice)

as Pegasus / Employee / Goblin (voice)

as Ursa / Young Cassi (voice)

as Ursa / Voice on TV (voice)

as Pegasus (voice)

as Susanne Steinem (uncredited)

as Grapefruit

as Vanessa Doofenshmirtz (voice)

as Marceline the Vampire Queen / Additional Voices (voice)

as PizzaRave (voice)

as Jun

as Guard (voice)

as Jun (voice)

as PizzaRave / Jun (voice)

as Joanna

as Bliss (voice)

as Vanessa (voice)

as Vanessa Doofenshmirtz (voice)

as Vanessa the Twi'Lek (voice)

as Pop Singer (voice)

as Little Girl

as Vanessa Doofenshmirtz (voice)

as Marceline the Vampire Queen (voice)

as Vennesa the Twi'Lek (voice)

as Vanessa (voice)

as Girl #1

as Julia

as Joanna Anderson