Meg Griffin

Megan, aka Megatron "Meg" Griffin (voiced by Rachael MacFarlane, Lacey Chabert, Tara Strong, and Mila Kunis) is the oldest child of Lois and Peter Griffin, and the sister of Chris and Stewie Griffin. She is currently attending James Woods Regional High School. Meg explains in "A Fistful of Meg" that her father changed her birth certificate to "Megatron" after her mother had already selected Megan. Despite this, she is still commonly called Megan such as by Mr. Berler in "Let's Go to the Hop" and Stewie in "A Very Special Family Guy Freakin' Christmas".