Here is a list of the more common Family Guy characters and guest stars and their voices.

Seth MacFarlane:
Peter Griffin
Brian Griffin
Stewie Griffin
Glenn Quagmire
Tom Tucker
Jake Tucker
Carter Pewterschmidt
Kool-Aid Man
Mickey McFinnigan
O'Brien
Dr. Elmer Hartman
Seamus
Jasper
Kevin Swanson
Jesus
God
Bill Clinton
William Shatner

Alex Borstein:
Lois Griffin
Loretta Brown
Barbara Pewterschmidt
Marguerite Pewterschmidt
Tricia Takanawa
Pearl Burton
Queen Latifah

Seth Green:
Chris Griffin
Neil Goldman
Dylan

Rachael MacFarlane, Lacey Chabert, Mila Kunis, Tara Strong:
Meg Griffin

Mike Henry:
Cleveland Brown
Herbert
Bruce the Performance Artist
Greased Up Deaf Guy
Fouad
Magic Johnson
Bee

Patrick Warburton:
Joe Swanson

Adam West:
Mayor West

Jennifer Tilly:
Bonnie Swanson

John G. Brennan:
Mort Goldman

Death:
Norm MacDonald
Adam Carolla

John Viener:
Hitler
Bob Barker
Liam Neeson
John Travolta
Sylvester Stallone
Tom Brokaw
Darth Vader (not portrayed by Stewie)
Mayor McCheese
Han Solo (no portrayed by Peter)

Fred Tatasciore:
Chevy Chase
Alec Baldwin
Vincent van Gogh
Michael Moore
Jay Leno

Chris Cox:
Magnum PI
George W. Bush
Justin Timberlake
Hayden Christensen
Satan

Alex Breckenridge:
Renee Zellwegger
Sarah Jessica Parker

Will Sasso:
Jack Black
Randy Newman
James Lipton

Will Ferrell:
Black Knight
Dave Campbell

Andre Sogliuzzo:
Mel Gibson

Danny Smith:
Spider Man
Paulie
Moby Dick
Pope

Gary Cole:
Principal Shepherd
Mike Brady
Bill Lumbergh

Phil LaMarr:
Ollie Williams
Red Foxx
Judge
Chris Tucker

Rachael MacFarlane:
Olivia
Katie Couric
Lindsay Lohan

Lori Alan:
Diane Simmons

Nicole sullivan Muriel Goldman:
Joan Quagmire

John G. Brennan:
Mort Goldman
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