Siobhan Thompson

Biography

Siobhan Thompson (born 29 July 1984) is a British-American sketch comedian and comedy writer. She is known for her work on the CollegeHumor Originals web series and has appeared in other programs such as Adam Ruins Everything and Broad City. She was also a staff writer for Adult Swim's Rick and Morty.

Known For

Arrested Development

Dimension 20

Dimension 20

Dimension 20

Dimension 20

Dimension 20

Dimension 20

Dimension 20

All Movies (11)

• Muppet Treasure Scriptland2026 · as Jim Hawkins
• Wealwell's Guide to Reposed Standing2026 · as Vanellope Chapman (voice)
• Dimension 20 Live: Viva Más Vegas2026 · as Riva
• Dimension 20 Live: Quangle Quest2025 · as Adaine Abernant / Ruby Rocks / Rosamund du Prix / Riva / Iga Lisowski
• Dimension 20 Live: Battle at the Bowl2025 · as Adaine Abernant
• Katie & Erika Throw the Perfect Father’s Day Party2025 · as Self
• Dimension 20 Live: Gauntlet at the Garden2025 · as Misty Moore
• The Roll of a Lifetime: How Dimension 20 Sold Out Madison Square Garden2025 · as Self - Cast Member
• The Scripted Muppet Caper2025 · as Lady Holiday
• The Disruptors2024 · as Melissa
• The Legendary Rick Perry and the Art of Dimension 202023 · as Self (archive footage)

All TV Shows (47)

• Toonout2026 · as Vanellope Chapman (voice)
• Gastronauts2024 · as Self - Judge
• Dimension 20: Time Quangle2024 · as Rowan Berry
• Dimension 20: Time Quangle2024 · as Adaine Abernant
• Dimension 20: Time Quangle2024 · as Princess Rosamund du Prix
• Dimension 20: Time Quangle2024 · as Ruby Rocks
• Dimension 20 Live2024
• Thousandaires2024 · as Self - Host
• Smartypants2024 · as Self - Society Member
• Smartypants2024 · as Self - Presenter
• Dirty Laundry2022 · as Self - Guest
• Dimension 20 Animated2021 · as Princess Rosamund du Prix (voice)
• Dimension 20 Animated2021 · as Riva (voice)
• Dimension 20 Animated2021 · as Ruby Rocks (voice)
• Dimension 20 Animated2021 · as Adaine Abernant (voice)
• Dimension 20's Adventuring Party2020 · as Self
• Game Changer2019 · as Self - Contestant
• Game Changer2019 · as Self (archive footage)
• Game Changer2019 · as The Voicemail Musical
• Game Changer2019 · as Self - Player
• Fantasy High: Extra Credit2019 · as Self
• Troopers: Rise of the Budget2019 · as TR-45HY "Trashy" (voice)
• The Rank Room2019 · as Self
• Total Forgiveness2019 · as Self
• WTF 1012019 · as Amsterdam Woman (voice)
• WTF 1012019 · as Mary Toft (voice)
• Adventuring Academy2018 · as Self
• Um, Actually...2018 · as Self - Contestant
• Dimension 202018 · as Adaine Abernant
• Dimension 202018 · as Ruby Rocks
• Dimension 202018 · as Imelda Pulse
• Dimension 202018 · as Riva
• Dimension 202018 · as Jaysohn
• Dimension 202018 · as Princess Rosamund du Prix
• Dimension 202018 · as Misty Moore / Rowan Berry
• Dimension 202018 · as Iga Lisowski / Rowan Berry
• Dimension 202018 · as Vanellope Chapman
• Dimension 202018 · as La Contesse Madeleine d'Artois
• Breaking News: No Laugh Newsroom2018 · as O.K. Simpson
• Breaking News: No Laugh Newsroom2018 · as Jessica Crispy
• CollegeHumor Does the Purge2016 · as Siobhan
• Bad Internet2016 · as The Hermione
• Bad Internet2016
• CollegeHumor Goes to Hell2015 · as Siobhan
• Um, Actually: The Web Series2015 · as Self - Contestant
• Broad City2014 · as Leigh
• Arrested Development2003 · as British Reporter