Actor Breaks Silence on Involvement
Stephen Root, known for voicing characters on King of the Hill, stated in an Associated Press interview that he appears in GTA 6 and that the project is scheduled for November 19.
“Yeah, you’re gonna see me in it. It’s coming out November 19th, is the latest I know of.”
Root added that his character appeared in early promotional material nearly a year ago and that fans quickly recognized his voice.
Details on Brian Heder

The character Brian Heder is depicted as a longtime drug runner who operates a boatyard with his third wife, Lori, and allows Jason to live rent-free in exchange for occasional help with local matters.
Root expressed satisfaction with the project without revealing further details, describing it as an amazing thing to look at.
Rockstar Maintains Cast Secrecy
No actors have been officially confirmed by Rockstar for GTA 6, including the performers behind protagonists Jason and Lucia, leaving fans to identify voices from trailers and extended footage.