Rachael MacFarlane — American Actress born on March 21, 1976,

Rachael Ann MacFarlane is an American voice actress and singer best known as the voice of character Hayley Smith on the animated television show American Dad!, which was created by her brother Seth MacFarlane. She also voiced supreme leader Numbuh 362 in Codename: Kids Next Door. In addition to voice acting, MacFarlane has also been involved in other aspects of animation, such as being a production manager for The Grim Adventures of Billy & Mandy and Welcome to Eltingville, and she wrote an episode of The Grim Adventures of Billy & Mandy, titled "Educating Grim"... (wikipedia)

I don't think that I could have survived in my family without a naughty sense of humor; yeah, absolutely. I think my brother and I both get our senses of humor from our parents. I mean, my mother was absolutely hilarious and foul. She had the most ridiculously off color sense of humor, so that was sort of what we grew up with.
I grew up, obviously, watching tons of animation; Saturday morning cartoons or anything that we could get our hands on. And then when 'The Simpsons' premiered, that just kind of changed the landscape of everything. We hadn't had prime time animations since 'The Flintstones.'
I started in theatre. I went to the Boston Conservatory and majored in musical theater.
I was the kid at six who was like, 'I want to be in a jazz club.' I was never the pop kid, ever. I mean that's not true, I had a couple years where I wanted to be Tiffany and Debbie Gibson, but aside from that, no.