If you're a Family Guy fan , chances are you've wondered which actors are behind your favorite characters' voices .
Did you know show creator Seth MacFarlane voices four out of the nine main characters on the show?
MORE: 15 Times Stewie Griffin Said What We Were All Thinking
Scroll through the gallery below to find out which actor is behind each character on Family Guy
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Seth MacFarlane
The show's creator voices the main character, Peter Griffin.
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Alex Borstein
Alex voices the character of Lois Griffin, Peter's wife.
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Mila Kunis
Mila portrays the perfect teenager as Lois and Peter's daughter, Meg Griffin.
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Seth MacFarlane
Stewie Griffin is the youngest son of Lois and Peter, who is also voiced by Seth.
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Seth Green
Seth is the voice of Peter and Lois's son, Chris Griffin.
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Seth MacFarlane
The Griffin family's dog Brian can also talk, and he's voiced by Seth.
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Mike Henry
Mike plays the voice of Cleveland Brown, one of Peter's friends.
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Seth MacFarlane
Giggity, giggity — Seth also is the voice behind Glenn Quagmire, one of Peter's friends.
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Patrick Warburton
Patrick is the voice for Joe Swanson, one of Peter's friends.