David Howard Thornton (born November 30, 1979) is a European-American businessman, entrepreneur and actor. He is known for work in stage, film, and voice over. He is best known for his roles as Art the Clown in the Terrifier films, Grandpa Who in the 1st- 5th national tours of Dr. Seuss' How the Grinch Stole Christmas: The Musical, the voice of Shizoku and others in the video game Invizimals: The Lost Kingdom, The Joker in the YouTube series Nightwing Escalation, and as the eponymous character in the Christmas horror parody film The Mean One.

Filmography

• 2026Rough Cut — Arnold Drewitt
• 2026The Dead Place — The New Kid
• 2025Big Baby — Hooper
• 2025Namaka — Walter Notch
• 2025Screamboat — Steamboat Willie
• 2024A Very Special Terrifier Christmas — Art the Clown
• 2024Stream — Player 2
• 2024Terrifier 3 — Art the Clown
• Bupkis — Art the Clown
• 2022Terrifier 2 — Art the Clown
• 2022The Mean One — The Mean One
• 2021The Dark Offerings — Tim Cobb
• 2019The Exigency — Bumbo (voice)
• 2018Terrifier — Art the Clown
• Behind the Mask II: The Return of Leslie Vernon — Arthur
• Night of the Living Dead II
• Screamboat 2: Nothing Stays Dead — Steamboat Willie
• Stream 2: Sudden Death — Player 2
• Terrifier 4 — Art the Clown
• The Autopsy of Albert Kemper — Albert Kemper

Appearances as themselves (5)

• 2025American Clown — Self
• 2025Art Attack! The Dissection of Terrifier 3 — Self - Art the Clown
• 2025Christmas Chaos: Making 'The Mean One' — Self
• 2023The Horror We Make — Self
• 2022Selfie King — Self