Olivia Olson
Acting
31
Acting Credits
Biography
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.
Known For
Adventure Time
Marceline the Vampire Queen (voice)
Phineas and Ferb
Vennesa the Twi'Lek (voice)
Phineas and Ferb
Vanessa (voice)
Steven Universe
Pop Singer (voice)
Adventure Time: Fionna and Cake
Marceline / Celine (voice)
Adventure Time: Fionna and Cake
Marceline (voice)
We Baby Bears
Ursa (voice)
We Baby Bears
Pegasus / Employee / Goblin (voice)
Filmography
Adventure Time: Side Quests
2026
as Marceline (voice)
Teller's Camp
2025
as Sadie O'Leary
Adventure Time: Fionna and Cake
2023
as Marceline / Celine (voice)
Adventure Time: Fionna and Cake
2023
as Marceline (voice)
The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer Special
2022
as Self
We Baby Bears
2022
as Ursa (voice)
We Baby Bears
2022
as Pegasus / Employee / Goblin (voice)
We Baby Bears
2022
as Ursa / Young Cassi (voice)
We Baby Bears
2022
as Ursa / Voice on TV (voice)
We Baby Bears
2022
as Pegasus (voice)
Phineas and Ferb the Movie: Candace Against the Universe
2020
as Vanessa Doofenshmirtz (voice)
Grapefruit
2020
as Grapefruit
The Glorias
2020
as Susanne Steinem (uncredited)
Adventure Time: Distant Lands
2020
as Marceline the Vampire Queen / Additional Voices (voice)
Fast & Furious Spy Racers
2019
as Jun
Fast & Furious Spy Racers
2019
as PizzaRave (voice)
Fast & Furious Spy Racers
2019
as Jun (voice)
Fast & Furious Spy Racers
2019
as Guard (voice)
Fast & Furious Spy Racers
2019
as PizzaRave / Jun (voice)
Red Nose Day Actually
2017
as Joanna
The Powerpuff Girls
2016
as Bliss (voice)
Phineas and Ferb: Star Wars
2014
as Vanessa the Twi'Lek (voice)
Steven Universe
2013
as Pop Singer (voice)
Voice Over
2012
as Little Girl
Adventure Time: Fun with Finn and Jake
2012
as Marceline the Vampire Queen (voice)
Adventure Time
2010
as Marceline the Vampire Queen (voice)
Phineas and Ferb
2007
as Vennesa the Twi'Lek (voice)
Phineas and Ferb
2007
as Vanessa (voice)
Zoey 101
2005
as Girl #1
Love Actually
2003
as Joanna Anderson
The Tracy Morgan Show
2003
as Julia