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Olivia Olson
Actor · Writer · 18 credits
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.
All Work
Adventure Time: Side Quests
2026
Marceline (voice)
Adventure Time: Fionna and Cake
2023
Marceline / Celine (voice)
We Baby Bears
2022
Ursa (voice)
The Powerpuff Girls
2016
Bliss (voice)
Steven Universe
2013
Pop Singer (voice)
Adventure Time
2010
Marceline the Vampire Queen (voice)
Phineas and Ferb
2007
Vennesa the Twi'Lek (voice)
Zoey 101
2005
Girl #1
