What's the deal with Seth MacFarlane having his sister (Rachel) voice the love interest of his characters?
He had her voice Olivia ( who's Stewie's on and off girlfriend) Sonya (who's was Quagmires abusive girlfriend) and that pre school girl who gave Stewie cooties. She also voiced Hayley from American Dad who have a pseudo incestous relationship with her father Stan Smith who voiced by Seth MacFarlane. One of the reasons why Seth have her voice his female characters is probably because he can get her on the cheap.
He had her voice Olivia ( who's Stewie's on and off girlfriend) Sonya (who's was Quagmires abusive girlfriend) and that pre school girl who gave Stewie cooties. She also voiced Hayley from American Dad who have a pseudo incestous relationship with her father Stan Smith who voiced by Seth MacFarlane. One of the reasons why Seth have her voice his female characters is probably because he can get her on the cheap.