Olivia Rose Olson
is an American actress, voice actress, and singer-songwriter, mostly known for voicing 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
For Disney, she voiced Vanessa Doofenshmirtz on the Disney Channel animated series Phineas and Ferb. She has also sung multiple songs as Vanessa on Phineas and Ferb, including a catchy duet called "Busted" with co-star Ashley Tisdale. Additionally, she sung "I'm Lindana and I Wanna Have Fun!" as Linda Flynn and "Ready for the Bettys" as The Bettys.
(Milo Murphy's Law)
Olivia Olson attending the 2011 San Diego Comic Con.
Olivia Olson speaks at the 2015 New York Comic Con.
Olivia Olson and Jeremy Shada
attending the 2018 San Diego Comic Con.