Stephen Root
Voice ActorStephen Root is a veteran American character actor known for King of the Hill, Office Space, and Barry, who also lends a voice to the Skybound Entertainment series Invincible on Prime Video.
Invincible Role
Root is part of the guest voice roster on Invincible, the adult animated superhero series Skybound Entertainment produces for Prime Video based on Robert Kirkman's comic. His decades of voice work, including his long running King of the Hill roles, made him a natural addition to the show's expansive cast of one off and recurring characters. He joins a long list of veteran character actors who have popped up in the series across its multiple seasons.
Career and Notable Roles
Root made his name playing station manager Jimmy James on NBC's NewsRadio through the late 1990s and the memorably deadpan Milton Waddams in the film Office Space, while also lending his voice to Bill Dauterive and Buck Strickland across King of the Hill's original run and its 2025 revival. He has turned up repeatedly in Coen brothers films, from O Brother, Where Art Thou? to No Country for Old Men, and earned an Emmy nomination for his supporting turn as a hitman's handler on HBO's Barry. His long list of television credits also spans Star Trek: The Next Generation, True Blood, Boardwalk Empire, Succession, and the 2026 series Widow's Bay.
Related Reading
See all
Naruto vs Luffy: Does the Fight Change if Luffy Tickles Hinata?
Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....
Namek Has No Women, and Piccolo Pulls Anyway
There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
Frequently Asked Questions
Who is Stephen Root?
Stephen Root is a veteran American character actor known for King of the Hill, Office Space, and Barry. He also lends a voice to Invincible, the Skybound Entertainment series on Prime Video.
What is Stephen Root's role in Invincible?
Root is part of the guest voice roster on Invincible, the adult animated superhero series Skybound Entertainment produces for Prime Video based on Robert Kirkman's comic. His decades of voice work, including his long-running King of the Hill roles, made him a natural addition to the show's expansive cast of one-off and recurring characters.
What characters did Stephen Root voice on King of the Hill?
Root voiced Bill Dauterive and Buck Strickland across King of the Hill's original run and its 2025 revival, two of his best-known animated credits.
What role does Stephen Root play in Office Space?
Root plays the memorably deadpan Milton Waddams in the film Office Space, one of the roles that established him as a distinctive character actor.
Has Stephen Root won any acting awards or nominations?
Root earned an Emmy nomination for his supporting turn as a hitman's handler on HBO's Barry. His long list of television credits also includes Star Trek: The Next Generation, True Blood, Boardwalk Empire, Succession, and the 2026 series Widow's Bay.
Sources & Information
This content is original writing by Daddy Jim Headquarters based on the Invincible anime series, manga, and official materials. Invincible was created by Robert Kirkman, Cory Walker and Ryan Ottley, published by Image Comics / Skybound, and animated by Skybound Animation. All rights to Invincible and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
Rights holders
- Created byRobert Kirkman, Cory Walker and Ryan Ottley
- Published byImage Comics / Skybound
- Animated bySkybound Animation
All rights belong to their respective owners.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
- Movie pages: theatrical posters and key visuals, credited to Skybound Animation and Image Comics / Skybound.
- Game pages: official box art, credited to the game's respective publishers.
- Manga chapter pages: volume covers, credited to Image Comics / Skybound and Robert Kirkman, Cory Walker and Ryan Ottley.
Official resources:
Help Us Keep This Wiki Accurate
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.
