Johnny Hardwick, known for playing Dale Gribble on “King of the Hill,” has died.

Law enforcement sources tell TMZ they were called to Hardwick’s Texas home Tuesday for a welfare check and discovered his body. We’re told Hardwick was pronounced dead at the scene … and no foul play is suspected. We don’t yet know the cause of death.

Johnny started performing stand-up comedy in 1990 in Texas, eventually landing his first stand-up appearance on “The Jon Stewart Show” a few years later.

Most remember Johnny from his work on the long-running animated sitcom, “King of the Hill” … playing Dale, the conspiracy theory-obsessed friend of the show’s lead, Hank Hill.

Johnny was with the show from the beginning, portraying Dale on the first episode that aired in January 1997 … and stuck with the series until its final episode in 2010. He was also listed as returning for a revival of the show, although it’s unclear if he ever recorded for it.