*Madeline “Maddie” Fenton is the wife of Jack and the mother of Jazz and Danny, and later, Danielle. She’s a scientist, one of the co-owners of Fenton Works and ghost hunter just like her husband, though she’s better at ghost hunting and more intelligent than him. Maddie is considered to be one of the few humans who can actually give some trouble to Danny if she decides to hunt him.

Maddie is a beautiful woman of curvy figure. She has violet eyes, shoulder-length brunette hair and red lipstick, and large wide hips. Her children inherited her facial features and figure.

In the series, Maddie is seen wearing a blue rubber jumpsuit with long black gloves and boots. Her suit also has a black belt with one pouch for her equipment. She’s sometimes seen wearing her jumpsuit hood, which she wears along with a pair of black lab googles with red lenses.

Maddie is a firm believer in what can be strongly evidenced (in the Danny Phantom universe, that includes ghosts) and is more rational than her husband.​​​

Unlike Jack who merely wants to rip them apart, Maddie believes in a more scientific approach, preferring to examine them. Of course, she often unknowingly makes Danny nervous whenever she talks about how she wants to dissect a ghost or study the remains after she blasts them to tiny bits. Like Jack, Maddie is none too friendly towards ghosts, though she's not quite as fond of destroying them outright.

Despite her obsession with ghosts, Maddie absolutely loves her family and will do anything to defend them.*