<P> Christopher Cross "Chris" Griffin (voiced by Seth Green) is Peter and Lois' 14 - year - old son . He is obese, irresponsible, and emotionally effusive . A recurring gag is that an evil monkey lives in his closet which he finds out is not evil in the episode "Hannah Banana". Chris tries fitting in with his peers, but fails due to his social awkwardness . </P> <P> Stewart Gilligan "Stewie" Griffin (voiced by Seth MacFarlane) is the Griffins' one - year - old child, but often behaves in adult ways such as speaking in an upper - class British accent . He is a child genius who frequently aspired to murder his mother Lois and take over the world but has since mellowed out considerably . Stewie built a time machine with which he and Brian have traveled through time . He has turned 1 year old in Chitty Chitty Death Bang, and hasn't aged past one year since . In fact, in Road to Rupert, he says he is a year old . </P> <P> Brian Griffin (voiced by Seth MacFarlane) is the family's anthropomorphic talking white Labrador Retriever and the best friend of both Peter and Stewie . He and Stewie are often at the center of the show's most critically acclaimed episodes, most notably the "Road to ..." episodes, where he and Stewie go on road - trips together . Brian is portrayed as an intellectual--a Brown University attendee--who often serves as the family's voice of reason, pointing out how ridiculous Peter's ideas are . He is not - so - secretly in love with Lois and is an unsuccessful, unemployed writer . </P> <P> In "Life of Brian", Brian is hit by a car and dies from his injuries, with the family by his side . The family then decides to adopt a new streetwise dog with a thick New Jersey accent, named Vinny . However in "Christmas Guy" (two episodes later), Stewie still misses Brian . He finds a way to go back in time and successfully saves him, also meaning that the family never adopted Vinny (though Stewie and Vinny did say their goodbyes). </P>

Whats the name of the dog on family guy