Olivia Olson

Known for: Acting
Born: 21 May 1992 (age 34)
Birthplace: Los Angeles, California, USA
TV credits: 13
Films: 12

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.

IMDb page

Known for

All TV13

2026Adventure Time: Side QuestsMarceline (voice) · 20 episodes★ 8.9
2023Adventure Time: Fionna and CakeMarceline / Celine (voice), Marceline (voice) · 6 episodes★ 8.7
2022We Baby BearsUrsa (voice), Pegasus / Employee / Goblin (voice), Ursa / Young Cassi (voice), Ursa / Voice on TV (voice), Pegasus (voice) · 2 episodes★ 7.3
2020Adventure Time: Distant LandsMarceline the Vampire Queen / Additional Voices (voice) · 1 episode★ 8.2
2019Fast & Furious Spy RacersJun, PizzaRave (voice), Jun (voice), Guard (voice), PizzaRave / Jun (voice) · 3 episodes★ 7.0
2016Milo Murphy's LawVanessa Doofenshmirtz (voice) · 1 episode★ 7.4
2016The Powerpuff GirlsBliss (voice) · 6 episodes★ 5.0
2013Steven UniversePop Singer (voice) · 1 episode

Films (12)

2025Teller's CampSadie O'Leary
2022The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer SpecialSelf
2020Phineas and Ferb the Movie: Candace Against the UniverseVanessa Doofenshmirtz (voice)
2020GrapefruitGrapefruit
2020The GloriasSusanne Steinem (uncredited)
2017Red Nose Day ActuallyJoanna
2017The Powerpuff Girls: The Power Of FourBliss (voice)
2014Phineas and Ferb: Star WarsVanessa the Twi'Lek (voice)
2012Voice OverLittle Girl
2012Adventure Time: Fun with Finn and Jake

Loading filmography