[Evan]

peter - ENFP -- the N is so apparent. remember, N does not mean smart.
stewie - xNTJ
brian - INFP -- always acts as peter's morality check. i'll link an episode if you guys don't believe me
chris - ISFP
meg - ISFJ
lois - xSxJ (for some reason i can't type her...)

Originally Posted by Mondo

If she was more Introverted, she would probably be something similar to Lisa Simpson, who usually doesn't take not being the most popular into account.

lisa is INFJ, not ISFJ. Ni vision, not Si physical stability.