Olivia Olson
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.
Movies
The Glorias
Susanne Steinem (uncredited)
Grapefruit
Grapefruit
Phineas and Ferb the Movie: Candace Against the Universe
Vanessa Doofenshmirtz (voice)
Red Nose Day Actually
Joanna
Phineas and Ferb: Last Day of Summer
Vanessa (voice)
Phineas and Ferb: Night of the Living Pharmacists
Vanessa Doofenshmirtz (voice)
Phineas and Ferb: Star Wars
Vanessa the Twi'Lek (voice)
Voice Over
Little Girl
Phineas and Ferb: Summer Belongs to You!
Vanessa Doofenshmirtz (voice)
Love Actually
Joanna Anderson
TV Series
Adventure Time: Fionna & Cake
Marceline / Celine (voice)
3 Episodes
We Baby Bears
Ursa (voice)
2 Episodes
Adventure Time: Distant Lands
Marceline the Vampire Queen / Additional Voices (voice)
1 Episode
Fast & Furious Spy Racers
Jun
1 Episode
The Powerpuff Girls
Bliss (voice)
6 Episodes
Steven Universe
Pop Singer (voice)
1 Episode
Adventure Time
Marceline the Vampire Queen (voice)
279 Episodes
Phineas and Ferb
Vennesa the Twi'Lek (voice)
1 Episode
Zoey 101
Girl #1
1 Episode
The Tracy Morgan Show
Julia
1 Episode