Stan Smith is the title character and protagonist of the adult animated sitcom American Dad!
Stan Smith is known for his long-running hate of that purple kid-hating scumbag Barney, and is sent on a mission by Deputy Director Bullock to murder him. However, Barney treats him horribly the whole time - from making him remove the Dora the Explorer reference on his car to stripping him naked and threatening to cut off his penis.
Barney is later arrested by the CIA, led by Bullock, and sent to Hell.
He was a part of The Trump Bunch since 2011