Hadeficent

Hadeficent is the het ship between Hades and Maleficent from the Sleeping Beauty, Hercules and Descendants fandoms.

Canon
As Hades and Maleficent are from different series, they have never met in canon. Although the two of them are recurring Disney villains in the Kingdom Hearts series. They have allied themselves with each other on more than one occasion. After Maleficent began her conquest of the worlds, in the first Kingdom Hearts game, Hades became one of her allies in her ring of villains. The two have also served as bosses in a few of the same games. While in the Disney Channel original film series, Descendants, the third film reveals that the live-action versions of themselves were once married to each other until Hades abandons both Maleficent and their daughter, Mal. As he had enough of him and Maleficent making each other miserable after the love they had for each faded away, he had believed that him leaving his family was the best thing for his daughter, the one good that came out of their former relationship.

House of Mouse
Hades was complaining about how disgusted he was at all the couples in the place, until he saw Maleficent enter. As soon as he saw her reprimanding her minions, he started having feelings for her. Much more animated now, he asks for her name, and upon hearing that it is "Maleficent," he exclaims, "a name that won my soul." He quickly gets up to go flirt with her, but Maleficent dismisses him by hitting him in the head.

After this, Mickey Mouse approaches Hades to advise him to try and be a little bit nicer so that Maleficent might like him better. To prove this, Mickey approaches Maleficent's table and starts acting kindly, asking how her day is going. When Hades notices her reaction is not a negative one, he starts believing that Mickey was right about being nice. So he follows Mickey's advice and changes himself to a more Mickey-like appearance, literally dressing up as him. Dressed like that, he approaches Maleficent one more time, acting strangely nice. Maleficent asks him to get closer, with Hades' hopes of his feelings getting reciprocated getting higher. Yet Maleficent answers "you're nice. I loathe and despise 'nice'." This breaks Hades' heart again and gets extremely angry at Mickey for this, following him around and trying to throw balls of fire at him.

At that moment, when Hades was threatening Mickey with roasting him, Maleficent takes an interest in him, approaching Hades this time. She says that she likes the idea of "roasted mouse" since she thinks Mickey is just "too nice." So after proclaiming that she likes "a man with a firey disposition," Maleficent agrees to go on a date with him to the table he was earlier seated on.

Kingdom Hearts (series)
Kingdom Hearts
 * Maleficent tries to warn Hades to not get overcome by the darkness.

Kingdom Hearts III
 * After Maleficent arrives in Olympus she asks Hades if he knows the location of a "black box", thinking that she means Pandora's Box he tells her where she could find it.

Children
Mal Maleficent Bertha, more commonly known by her nickname Mal, is the daughter of the Disney Descendants (film) versions of Maleficent and Hades. After the two split up by Hades abandoning his ex-wife and leaving her to raise their daughter all on her own, he didn't keep in touch with either of them, until Mal needed the power of her estranged father's ember to overpower her mother's stolen sceptre. Mal's hair color is normally purple, one of Maleficent's known colors, but when Hades stole some of her powers parts of it began to turn dark blue. Like her mother within and outside the Descendants series, Mal can turn herself into a dragon and has inherited Maleficent's magic powers, and Mal had used those powers and her new found goodness to shrink Maleficent to the size of her own heart; in which turns her mother into a purple lizard. While her encouraging Hades to do something good made him a hero, and they were finally able to form a loving father-daughter bond between them. When Hades lends his ember to Mal on the isle, however, he tells his daughter that since she is only part Hades she wouldn't be able to use the ember in its full potential. Meaning that Mal's inherited god heritage, that makes her a demigoddess, isn't very strong in her, possibly due to her mother's dark fairy magic.

Fanon
The ship could simply be due to them being classic Disney Villains that have met and allied themselves with each other in a few canon Disney crossovers, like Kingdom Hearts, along with the House of Mouse Halloween episode, "Halloween With Hades" featuring Hades having an romantic interest in Maleficent. After Descendants 3 revealed Hades to be Mal's father, a few fans began to believe that the House of Mouse episode of him and Maleficent might have predicted it, or could have been the reason for it. Before it was officially revealed in the third film, a few fans had theorized that Hades is the most logical choice of being Mal's father, since someone like Maleficent would want to marry or have a child with a powerful villain, next to her. As well as the fact that shortly after Mal approaches blue, colored flames in the Descendants short film, she says "Dad". A few fans are also hoping that a fourth Descendants film would have Hades and Maleficent getting back together, for their daughter.

On AO3, the ship has 23 fanfic, while fanfiction.net currently has 8 in both its Descendants category and its crossover category of Hercules and Sleeping Beauty, along with its Kingdom Hearts category only having 2/3 fanfics on the two.

Trivia

 * In the Disney Descendants film series they are two of the most powerful and feared villains to be trapped on the Isle of the Lost.
 * In the novel series of Descendants, Hades has a son named Hadie and while he is believed to be Mal's half brother he most likely was ret-conned since he was not mentioned in the 4th book and seeing as he's Hades son he would've been mentioned if he existed
 * They both appear in Once Upon A Time.

Fandom
FAN FICTION
 * Hades/Maleficent (Disney) tag on FanFiction.Net
 * Hades/Maleficent (Descendants) tag on FanFiction.Net
 * Hades/Maleficent (Kingdom Hearts) tag on FanFiction.Net
 * Hades/Maleficent (Kingdom Hearts) tag on FanFiction.Net