2. Bryan Cranston
Another Breaking Bad alumni to have appeared in American Dad! is Bryan Cranston, star of the AMC hit show and who appears in two episodes of the animation. First, Cranston provides the voice of Bill Publisherman in "Star Trek" and later Mr. Winthrop in "A Jones for a Smith". As 'Publisherman', Cranston plays the role of the owner of a publishing house who picks up Steve's book 'Roger the Alien', and as Winthrop, the actor plays the father of a girl Steve fancies. Cranston is best known for his roles as "Walter White" in Breaking Bad and also Hal in comedy Malcolm in the Middle.