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Cast and credits of
Sibling Rivalry (2006)
2
Pictures
Directed by
Dan Povenmire
Pete Michels
Peter Shin
Starring
Seth MacFarlane
Peter Griffin / Brian Griffin / Stewie Griffin / Santa / Lee Harvey Oswald / Glenn Quagmire / Captain Seamus / Tony Danza / Tom Tucker /
Alex Borstein
Lois Griffin / Gym Teacher / Woman in Bed (voice)
Seth Green
Chris Griffin (voice)
Mila Kunis
Meg Griffin (voice)
Randy Crenshaw
Barbershop Quartet Singer #4 (voice)
Ralph Garman
Letter A (voice)
Mike Henry
Cleveland Brown (voice)
Phil LaMarr
Morgan Freeman (voice)
Rick Logan
Barbershop Quartet Singer #3 (voice)
Wallace Shawn
Bertram (voice)
Danny Smith
B.C. #1 / Letter E (voice)
Tara Strong
Little Baby Girl (voice)
Alec Sulkin
Inmate #2 (voice)
Nicole Sullivan
Nurse at Sperm Bank (voice)
John Viener
TV Announcer / Sylvester Stallone (voice)
Patrick Warburton
Joe Swanson (voice)
Wally Wingert
B.C. #2 (voice)
Chris Wedge
Scrat (voice) (uncredited)