The Family Guy cast is a group of talented people.
Seth McFarlane, who is the creator of the Family Guy, also does the most voices on the show. He provides voices for Peter Griffin, Brian Griffin, Stewie Griffin, Glen Quagmire, Tom Tucker and voices for additional characters on the show.
Another member of the Family Guy Cast that does many voices is Alex Borstein. Many may know her from her days on MadTV as Ms. Swan, a short Asian lady who made no sense. Her vocal talents are used on Lois Griffin, Loretta, Tricia Takanawa, Barbara Pewterschmidt and additional voices.
Seth Green, another member of the Family Guy Cast, has been an actor ever since he was 10 years old and has appeared in many movies and T.V. shows. Brian Griffin, Mort Goldman and additional voices are voices that he does.
Of all the original Family Guy Cast members, Meg Griffins voice is the only one that has had an actor change. The actor who voiced Meg Griffin was Lacey Chabert. Lacey, who is from Party of Five fame, did a few episodes for the first season and was uncredited. Mila Kuniz would later join the Family Guy Cast as the voice of Meg, and still is to this day. Mila Kuniz is best known as Jackie Burkhart on That 70's Show.
Along with the regular Family Guy Cast, there are many regular guest voices on the show. Adam West, better known as the original Batman, has a constant role on the show and plays himself as the Mayor of Quahog. Joe Swanson's character is voiced by Patrick Warburton. The other regular guest voices include Danny Smith (Evil Monkey), Lori Alan (Diane Simmons), Gary Cole (Michael Eisner, Principal Shepard and additional voices) and Phil LaMarr (Gambler Dan, Rupert, Ollie Williams, Pimp, Minister and additional voices).