Phil Dunphy - Father Claire Dunphy - Mother Haley Dunphy - Sister Luke Dunphy - Brother Jay Pritchett - Grandfather De De Pritchett - Grandmother Mr. Pritchett† - Great-Grandmother Gloria Pritchett - Step-Grandmother Frank Dunphy - Grandfather Grace Dunphy† - Grandmother Mitchell Pritchett - Uncle Cameron Tucker - Uncle Manny Delgado - Step-Uncle Joe Pritchett - Half-Uncle Lily Tucker-Pritchett - Adoptive Cousin Alexandra Anastasia "Alex" Dunphy is the youngest daughter of Claire and Phil.
Alex is evidently the most clever and intelligent of Claire and Phils' children.
Her older sister Haley is five years older and her brother Luke is a year younger.Claire says that during her pregnancy with Alex, she went through "pregnancy brain", implying that the brainy Alex was strongly competing with her for resources ("When a Tree Falls").Although Alex is younger than most of the family, she is arguably the most intelligent and well-read member, even more than Manny and her lawyer uncle Mitchell ("Other People's Children").Being an overachiever, she tends to address people with sarcasm and condescension, although most of the time nobody gets her humor.She is also shown to be competitive just like her mother Claire, which she admits is because she is not used to not coming in first.
Having raised by inexperienced parents, Alex learned to be extremely self-reliant at a young age that Phil once compared her to a self-cleaning oven ("Under Pressure").
Due to her abilities, her parents also tend to pay less attention to her concerns in favor of her less capable siblings.
Alex often breaks the fourth wall when her family discusses ridiculous ideas and she feels like the odd ball.
In Grill, Interrupted, her grandfather Jay confides to Alex that the family needs a leader and one day he will not be around to do it anymore, implying that in the future, she will the the one to keep the family in check because she is the only one who can do it.
She enjoys messing her family when they are rude to her, which is fairly often, taking advantage of their and inferior intellect by fooling them into believing unrealistic things.
At one time she convinced Haley and Luke that they could charge electronics by rubbing the battery on her head and holding it in his mouth ("En Garde").