William Stulla (May 24, 1911 – August 12, 2008), also known as Engineer Bill, (1955-1966) was an American children's television host.
Later, he hosted Cartoon Express on Los Angeles's KHJ-TV 9 (Ind) from 1954 to 1966; in this position, he won two Emmy Awards.
Also featured on the show was "Little Mo, the bad habit buster," in which a small model electric train engine attempted to push a model boxcar containing the "bad habit" of the week into a bin, located at the top of an incline.
Bill Stulla closed his show with his signature message to his young audience, "Happy highball, engineers!"
Stulla is credited as an inspiration in the liner notes for the 1966 Mothers of Invention album, Freak Out.