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.
Voice Over
As Little Girl
Phineas and Ferb: Night of the Living Pharmacists
As Vanessa Doofenshmirtz (voice)
The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer Special
As Self
Love Actually
As Joanna Anderson
Red Nose Day Actually
As Joanna
Phineas and Ferb: Last Day of Summer
As Vanessa (voice)
Phineas and Ferb: Star Wars
As Vanessa the Twi'Lek (voice)
Phineas and Ferb the Movie: Candace Against the Universe
As Vanessa Doofenshmirtz (voice)
Phineas and Ferb: Summer Belongs to You!
As Vanessa Doofenshmirtz (voice)
Grapefruit
As Grapefruit
The Glorias
As Susanne Steinem (uncredited)
We Baby Bears
As Ursa (voice)
Adventure Time: Fionna & Cake
As Marceline (voice)
The Tracy Morgan Show
As Julia
The Powerpuff Girls
As Bliss (voice)
Steven Universe
As Pop Singer (voice)
Zoey 101
As Girl #1
Fast & Furious Spy Racers
As PizzaRave (voice)
Adventure Time: Distant Lands
As Marceline (voice)
Adventure Time
As Marceline the Vampire Queen (voice)