Olivia Rose Olson (born May 21, 1992) is an American actresses, voice actress, musician and writer.
She is best known for her roles as Marceline the Vampire Queen on Adventure Time, Vanessa Doofenshmirtz on Phineas and Ferb, and Joanna in Love Actually. On top of acting, she is a singer-song writer and has written and co-authored several Adventure Time comics and graphic novels.
Filmography:
- Love Actually (2003): Joanna Anderson
- Red Nose Day Actually (2017)
- Zoey 101 (2006): Girl #1
- Phineas and Ferb (2008–2015): Vanessa Doofenshmirtz, additional voices
- Milo Murphy's Law (2017–2019)
- Phineas and Ferb The Movie: Candace Against the Universe (2020)
- Adventure Time (2010–2018): Marceline the Vampire Queen
- Adventure Time: Distant Lands (2020)
- Adventure Time: Fionna and Cake (2023)
- She reprised her role in several video games based on the show.
- LEGO Dimensions (2015)
- Steven Universe (2015): Pop Singer
- The Powerpuff Girls (2017-2019): Blisstina Utonium
- Robot Chicken (2020): Mal, Yellow Power Ranger, Emily Elizabeth
