Stan Smith is the main character of the adult animated sitcom American Dad!. He is voiced by the show series creator Seth MacFarlane.
About the character
Stan is Francine's husband and Hayley and Steve's father. Though Hayley may or may not be Stan's biological daughter, Francine revealed to have cheated on Stan at a bachelorette party in the episode "The Kidney Stays in the Picture"; despite this, Stan regards Hayley as his daughter. As the Smith family breadwinner, Stan is a CIA agent. Early on in the series, Stan was exaggeratedly patriotic and Conservative. His character, however, has progressed over the course of the series from the originally ultra right-wing bigot it previously was. All the same however, Stan has proven to be drastic and extreme in numerous other ways beyond politics. He's often shown rashly taking extreme measures in ways that are conspicuously destructive, disastrous, offensive, and life-threatening to others.
Making his extreme-measure taking worse, Stan is utterly inconsiderate and insensitive, thus he does not stop to think of how others are negatively impacted, nor does he care. As examples of this: in the episode "Dope & Faith" when Stan found out one of his friends was an atheist, he tried getting him to pray by blowing up his home, spreading the bird flu at his restaurant, brainwashing his wife into thinking she was a lesbian, and taking his kids away; in the episode "I Can't Stan You," Stan evicted his entire neighborhood and his own family just for overhearing some of his neighbors gossiping about him behind his back; in the episode "Four Little Words," Stan framed his wife as a murderer all so as not to hear her say the words "I told you so"; etc. Not a stranger to going to any and all lengths to achieve his desired ends—even to the point of shamelessly harming others—Stan is characterized as very dog-eat-dog. Aside from his thoughtlessly drastic and endangering behaviors, he has an endearing and sensitive side as well. It has been revealed that he very much desires fatherly love and attention but has always lacked this. Stan's parents separated when he was very young (later learned because of Stan himself in the episode "Blood Crieth Unto Heaven"); thus he has a father (Jack Smith) who was not around much and mistreated him.