Madeline “Maddie” Fenton serves as the dedicated wife of Jack Fenton and the loving mother of Jasmine and Daniel Fenton in the Nickelodeon animated series Danny Phantom. A talented scientist and inventor, she co-founded Fenton Works alongside her husband, where they develop specialized equipment designed to study and combat ghostly entities. Maddie first appeared in the series premiere episode “Mystery Meat,” which debuted on April 3, 2004. Her background includes a college friendship with Vlad Masters, who developed an unrequited romantic interest in her, a dynamic that influences several storylines throughout the series.

Possessing exceptional intelligence and combat skills as a ninth-degree black belt martial artist, Maddie often proves more level-headed and effective in ghost-hunting endeavors than her exuberant spouse. She maintains a strong commitment to her family, displaying protective maternal instincts while supporting the operations of Fenton Works. For the majority of the series, she remains unaware that her son Danny has become a half-ghost superhero known as Danny Phantom, a revelation that marks a pivotal point in her character's arc.

Important developments in Maddie's narrative include her navigation of Vlad Plasmius's persistent advances and her eventual acceptance of her son's dual identity. In the episode “Phantom Planet,” following disclosure by her daughter Jazz, both Maddie and Jack embrace Danny's powers and heroic activities. Furthermore, she extends her familial bond to include Danielle Phantom, Danny's clone, solidifying her role as a compassionate and adaptable matriarch. These elements underscore her growth from a dedicated ghost hunter to a fully supportive family figure across the series' progression.