In Family Guy, Seth MacFarlane does the voices of Peter Griffin, Stewie Griffin, Brian Griffin, and Glen Quagmire, Seth Green does the voice of Chris Griffin, and Mila Kunis does the voice of Meg Griffin.
Tamera Mowry voiced "Esther" in "Barely Legal" an unknown character in "Peter's Daughter"
Esther in Barely Legal & Unknown character in Peter's Daughter
Mike Henry is the voice of Consuela on Family Guy.
Keir Gilchrist
Seth McFarlane. He also does most of the voices in the show.
Patrick Warburton; he also voices Joe in Family Guy and plays a role in the children's film G-Force
There is no existing Family Guy character 'inside' the suit. The Black Knight character is exactly how you see him.
Mike Henry is the voice of Consuela on Family Guy.
Keir Gilchrist
Lois Griffin from Family guy is voiced by the producer and staff writer, Alex Borstein. Lois, the character was created by the creator of the series, Seth MacFarlane who also voices four of the characters on the show.
Yes, he voices himself in "Tales of a Third Grade Nothing"
No such character exists on Family Guy
She voices Herself.
There is a character named Lois in Family Guy.
Seth MacFarlane
There is no mailman character on Family Guy
Joe Swanson from the Family Guy is voiced by Patrick Warburton. Joe is a police officer in the series.
Seth McFarlane. He also does most of the voices in the show.
Frank voiced himself