Olivia Olson

Olivia Olson

Known for
Acting
Born
May 21, 1992 (age 34)
Birthplace
Los Angeles, California, USA

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

Filmography

2026
Adventure Time: Side Quests poster

Adventure Time: Side Quests

TV · as Marceline (voice) · 20 eps

2025
Teller's Camp poster

Teller's Camp

Movie · as Sadie O'Leary

2023
Adventure Time: Fionna and Cake poster

Adventure Time: Fionna and Cake

TV · as Marceline / Celine (voice), Marceline (voice) · 3 eps

2022
The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer Special poster

The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer Special

Movie · as Self

2022
We Baby Bears poster

We Baby Bears

TV · as Ursa (voice), Pegasus / Employee / Goblin (voice), Ursa / Young Cassi (voice), Ursa / Voice on TV (voice), Pegasus (voice) · 2 eps

2020
Phineas and Ferb the Movie: Candace Against the Universe poster

Phineas and Ferb the Movie: Candace Against the Universe

Movie · as Vanessa Doofenshmirtz (voice)

2020
Grapefruit poster

Grapefruit

Movie · as Grapefruit

2020
The Glorias poster

The Glorias

Movie · as Susanne Steinem (uncredited)

2020
Adventure Time: Distant Lands poster

Adventure Time: Distant Lands

TV · as Marceline the Vampire Queen / Additional Voices (voice) · 1 ep

2019
Fast & Furious Spy Racers poster

Fast & Furious Spy Racers

TV · as Jun, PizzaRave (voice), Jun (voice), Guard (voice), PizzaRave / Jun (voice) · 1 ep

2017
Red Nose Day Actually poster

Red Nose Day Actually

Movie · as Joanna

2017
The Powerpuff Girls: The Power Of Four poster

The Powerpuff Girls: The Power Of Four

Movie · as Bliss (voice)

2016
The Powerpuff Girls poster

The Powerpuff Girls

TV · as Bliss (voice) · 6 eps

2016
Milo Murphy's Law poster

Milo Murphy's Law

TV · as Vanessa Doofenshmirtz (voice) · 1 ep

2014
Phineas and Ferb: Star Wars poster

Phineas and Ferb: Star Wars

Movie · as Vanessa the Twi'Lek (voice)

2013
Steven Universe poster

Steven Universe

TV · as Pop Singer (voice) · 1 ep

2012
Voice Over poster

Voice Over

Movie · as Little Girl

2012
Adventure Time: Fun with Finn and Jake poster

Adventure Time: Fun with Finn and Jake

Movie · as Marceline the Vampire Queen (voice)

2010
Phineas and Ferb Summer Belongs to you ! poster

Phineas and Ferb Summer Belongs to you !

Movie · as Vanessa Doofenshmirtz

2010
Adventure Time poster

Adventure Time

TV · as Marceline the Vampire Queen (voice) · 279 eps

2007
Phineas and Ferb poster

Phineas and Ferb

TV · as Vennesa the Twi'Lek (voice), Vanessa Doofenshmirtz (voice), Tink (voice) / Crash (singing voice) · 1 ep

2005
Zoey 101 poster

Zoey 101

TV · as Girl #1 · 1 ep

2003
Love Actually poster

Love Actually

Movie · as Joanna Anderson

2003
The Tracy Morgan Show poster

The Tracy Morgan Show

TV · as Julia · 1 ep