<P> Lois Griffin is voiced by producer and staff writer, Alex Borstein, who also voices recurring characters such as Asian reporter Tricia Takanawa, Loretta Brown and Lois' mother Barbara Pewterschmidt . Borstein has been part of the main voice cast from the beginning of the series including the pilot, and has been voicing Lois from the start . </P> <P> At the time Family Guy was being developed, Borstein was working in the sketch comedy, MADtv . She was asked to audition by a member of the MADtv staff who was helping MacFarlane develop the show . She had not met MacFarlane or seen any artwork and said it was "really sight unseen". At the time, she was doing a stage show in Los Angeles, in which she played a redhead mother, whose voice she had based on one of her cousins from Long Island, New York . She took the voice of the character to the set and use it for Lois . The voice was originally slower, when MacFarlane heard it, he asked her to make it faster and higher . Borstein has noted that the voice of Lois has been changing from the slower original voice to the quicker up tempo voice of the present episodes . </P> <P> There have been occasions where Borstein does not voice Lois, such as in the episode "Road to the Multiverse", where Lois is not voiced by Borstein in a scene and instead was voiced by Japanese actress Kei Ogawa, who was required for a scene where everything in the world was Japanese (she also did the voice of Meg for the scene). </P> <P> Lois's personality has evolved throughout the episodes . She is commonly the voice of reason to Peter's shenanigans, but in some episodes she can act darker than normal and sometimes shows a taste for sadomasochism . In the episode "The Son Also Draws", Lois showed a gambling addiction when the family went to an Indian casino and lost the family car . In the episode "Model Misbehavior", Lois becomes a bulimic model . However, in "Sibling Rivalry", just the opposite happens where Lois gains a ton of weight after Peter has a vasectomy and loses his sex drive . As a result, Peter makes fun of her causing her to get even fatter out of spite . He doesn't stop until he discovers just how amazing "fat - sex" is and force feeds her to make her even fatter which in turn will please him . By the end of the episode she is returned to her normal weight by the family doctor after having a heart attack . "Stuck Together, Torn Apart" shows Peter and Lois splitting up because of Peter's jealousy, only to discover that Lois has the same character flaw of jealousy and the two decide to live with their mutually jealous nature . She has also hinted at or been shown using drugs . After the first two seasons, Lois is shown to have more of an egotistical, neglectful, and cold - hearted personality, usually towards Brian or Meg (and later Stewie). </P>

Did the voice of lois on family guy change
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