Chuck & Christie white are villains in "American Dad".
Chuck isn't exactly evil. He's more of a bully than a villain, but Christie has been shown to be an outright villain.
They first appeared in "Deacon Stan, Jesus Man", when Stan was spying on him through binoculars while the White family were getting ready for church.
"Not Particularly Desperate Housewives" reveals the most about Christie White's personality. Francine desperately envies Christie as an elegant and sophisticated housewife who lives in sharp contrast to her own humdrum life. Christie is a member, and probably the leader of a social circle of elite women called the Ladybugs. Among her associates in the Ladybugs are Casey and Katie. Since Christie cheats on her husband, since she's a ladybug. This might mean she doesn't really love Chuck that much since she constantly cheats on him, It is unknown if he is aware of it, or whether he cares.
When Francine learns the truth behind the group, Christie White and the rest of the Ladybugs reveal that they will go to great lengths, even murder, to protect their secret. They killed a former member of the group who it turned out was lying about having an affair by crushing her with a load of shopping carts they later tried to do the same with Francine.
In "Live and Let Fry" Christie gets busted for pot and gets her picture in the paper, prompting Stan to taunt her.
The couple have a daughter, Betsy, who had a romantic relation with Steve and later left to go to her aunt because she got pregnant with Roger's egg. He also has a son that only showed up in two scenes and is completely ignored.
Christie and Chuck are stern parents who push their daughter Betsy to overachieve as a gymnast. Christie is very controlling of all the aspects of her daughter's life; she goes as far as telling her daughter that kissing leads to pregnancy. When Betsy gets impregnated by Roger's egg, Christie and Chuck do not hesitate to send their daughter away, but she is happy to be finally free from her parents' control.
Chuck has a distinctive laugh, which he ends most sentences with. He generally laughs when mocking people such as Stan, but also laughs when angry or depressed.
In "Meter Made", Christie continues to demonstrate her cruel humor and the way she makes condescending jokes on Francine. She is on the committee of the Annual Parade of Homes, a neighborhood event that showcases the best houses in the neighborhood. As Francine was expecting to receive an invitation to the event, Christie actually gives her a sign that says "DOGS POOP HERE." After the Smiths blackmail their way to be included in the Parade, Christie stops by to call their house unpresentable and calls Francine "as stupid as [her] house is ugly." Immediately afterwards, she openly acknowledged being a bitch.
Christie and Chuck show that they are not above flaunting how they can easily get a table at a fancy restaurant even without reservations. They are also quick to make fun of Stan and Francine when they don't get admitted to the same restaurant.