Olivia Olson
Television
Table:
Year
Show
Role
Appearances

2004
The Tracy Morgan Show
Julia
One episode, "Career Day"

2006
Zoey 101
Girl #1
One episode, "Broadcast Views"

2008–2015
Phineas and Ferb
Vanessa Doofenshmirtz
Voice role
Second time working with Thomas Sangster

2010–2018
Adventure Time
Marceline the Vampire Queen
Voice role

2017
Milo Murphy's Law
Additional Voices
One episode, "Battle of the Bands"

2017
The Powerpuff Girls
Blisstina Utonium
Three episodes, "Power of Four", "Never Been Blissed" and "In the Doghouse" (American Dub only)

2017
Red Nose Day Actually
Joanna
Sequel to Love Actually

Having looked at the table that covers 'Olivia Olson', section 'Television', compose one sentence describing only the highlighted cells and format it within the following JSON object {"answer": "YOUR ANSWER"}.