Creator / Rachael MacFarlane
Peter Griffin's kid sister

Voice actress, born March 21, 1976, best known as the voice of Hayley Smith on American Dad!, as well doing voice work on shows such as Family Guy, The Batman, The Grim Adventures of Billy & Mandy, Samurai Jack, Dexter's Laboratory, The Powerpuff Girls, Johnny Bravo, Codename: Kids Next Door, Sofia the First , The Orville, and that's just the stuff you've heard of. Oh, also, apparently she's the sister of that dude who created Family Guy.

This actress contains examples of:

  • Incestuous Casting: On Family Guy, she voiced Stewie's love interest, Olivia. Stewie, as most of you know, is voiced by her brother Seth. Also Quagmire's abusive girlfriend, Quagmire being voice by Seth too.
    • In American Dad, there was an episode where Hayley had a brief fling with Stan's body double, also voiced by Seth. There was also an episode where Roger (again, Seth) became romantically infatuated with Hayley.
  • Real-Life Relative: Her character on American Dad! is the daughter of the main character, Stan Smith, voiced by her brother.