Olivia Olson
Olivia Olson
Gender   Female
Date of birth
May 21, 1992 (Age 25)
Place of birth
Los Angeles, CA
Actress, singer, songwriter
Characters portrayed
Unnamed Battle of the Bands Host
Other projects
Phineas and Ferb
Love Actually
Adventure Time

Olivia Rose Olson (born May 21st, 1992) is an American actress and singer-songwriter, most notable for her roles as Vanessa Doofenshmirtz on Phineas and Ferb and Marceline in Adventure Time.

She is the adoptive daughter of Martin Olson.

She provides the voice of the host of Battle of the Bands in Battle of the Bands.