Acting
Olivia Olson
May 21, 1992 (34 years) 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.
Known for
8.5
Adventure Time
Marceline the Vampire Queen (voice)
7.1
Love Actually
Joanna Anderson
7.9
Phineas and Ferb
Vennesa the Twi'Lek (voice)
8.4
Steven Universe
Pop Singer (voice)
7.0
Fast & Furious Spy Racers
PizzaRave (voice)
8.1
Zoey 101
Girl #1
7.3
We Baby Bears
Ursa (voice)
8.7
Adventure Time: Fionna and Cake
Marceline / Celine (voice)
8.2
Adventure Time: Distant Lands
Marceline the Vampire Queen / Additional Voices (voice)
7.2
Phineas and Ferb the Movie: Candace Against the Universe
Vanessa Doofenshmirtz (voice)
5.0
The Powerpuff Girls
Bliss (voice)
7.0
Red Nose Day Actually
Joanna
7.1
Phineas and Ferb: Star Wars
Vanessa the Twi'Lek (voice)
8.9
Adventure Time: Side Quests
Marceline (voice)
6.5
The Glorias
Susanne Steinem (uncredited)
Filmography
8.9
Adventure Time: Side Quests
2026 · Marceline (voice)
5.2
Teller's Camp
2025 · Sadie O'Leary
8.7
Adventure Time: Fionna and Cake
2023 · Marceline / Celine (voice)
7.3
We Baby Bears
2022 · Ursa (voice)
7.0
The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer Special
2022 · Self
8.2
Adventure Time: Distant Lands
2020 · Marceline the Vampire Queen / Additional Voices (voice)
7.2
Phineas and Ferb the Movie: Candace Against the Universe
2020 · Vanessa Doofenshmirtz (voice)
6.5
The Glorias
2020 · Susanne Steinem (uncredited)
Grapefruit
2020 · Grapefruit
7.0
Fast & Furious Spy Racers
2019 · PizzaRave (voice)
7.0
Red Nose Day Actually
2017 · Joanna
5.0
The Powerpuff Girls
2016 · Bliss (voice)
7.1
Phineas and Ferb: Star Wars
2014 · Vanessa the Twi'Lek (voice)
8.4
Steven Universe
2013 · Pop Singer (voice)
Voice Over
2012 · Little Girl
Adventure Time: Fun with Finn and Jake
2012 · Marceline the Vampire Queen (voice)
4.0
Inanimate Insanity
2011 · Lyricist, Songs
8.5
Adventure Time
2010 · Marceline the Vampire Queen (voice)
7.9
Phineas and Ferb
2007 · Vennesa the Twi'Lek (voice)
8.1
Zoey 101
2005 · Girl #1
7.1
Love Actually
2003 · Joanna Anderson
8.8
The Tracy Morgan Show
2003 · Julia