Annie Mack is a self-proclaimed teenage genius, the sister of Alex and the daughter of George and Barbara, the boyfriend of Bryce and an intern for Danielle Atron. She's a girl of average height with homely clothing, dark brown hair usually clipped back in a ponytail, and an affection for science and technology.Much to Alex's chagrin, Annie was a child prodigy and therefore Alex always lives in Annie's shadow. Annie has a tendency to be condescending, pretentious and oblivious to Alex's problems, but despite this, Annie truly cares for Alex and Alex's secret powers bond them closer together.Annie usually claims to find Raymond Alverado very annoying and weird, but in the episode Leaving , Annie admits that Ray has become a very dear friend to her. She hugs him and requests that he look after Alex in her absence.Annie dislikes Danielle Atron immensely yet plans to replace her one day as the CEO of the Paradise Valley Chemical Plant. Like Danielle, Annie was a brilliant child, and Annie shares many of the same physical appearances as Danielle. However, unlike Danielle, Annie is much more careful about GC-161 research and has much stronger morals.Annie has trouble making friends but by Season 4, she starts to meet more people. Annie doesn't get along well with Lars, and although she likes Lars' shy wife, Yvonne Frederickson, she still finds Lars himself to be creepy and nosy.