Hadegara

Hadegara is the het ship between Hades and Megara from the Hercules fandom.

Canon
Megara became a servant of Hades by giving him her soul to cure her boyfriend. However, he left her for another woman leaving Megara heartbroken and serving Hades. From then on, she's been forcedly bound to him and forced to follow his commands. Despite being Hades' servant, she always talks back at him and doesn't take him seriously. However, when Megara accidentally meets Hercules, Hades gets extremely enraged with his servants who were supposed to kill him. But sees the opportunity of using Megara for her to get closer to Hercules, and potentially killing him, so he can take down Zeus and the other Gods. So after Megara gets closer to Hercules, and starts catching feelings for him, Hades asks her what his weak point is. Megara firmly states she won't collaborate in Hades' assassination plan. But Hades reminds her that he is her master, and that if she wants her freedom back she must obey him. So when she doesn't agree, he forces her by chaining her and taking her to Hercules so she can confess that she was working with Hades.

Chaos ensues after Hades enacts his plan, but Megara saves Hercules' life, putting hers in danger, and ultimately dying. Hades' plan ends up failing, but he takes Megara to the Underworld. However, Hercules ends up saving her, and freeing her from Hades.

Fanon
Despite Megara being in a romantic relationship with Hercules at the end of the film, some people still ship Hadegara. The ship doesn't have that many fan works or that much presence fandom wise, and it's frowned upon by a big part of the fandom due to their dynamic as master and servant during most of the movie's duration. However, it's still one of the top five most popular ships within the Disney Hercules fandom.

On AO3, the ship currently has over 10 fanfics about it. Most of them depict the two in a romantic relationship. Some times, their toxic dynamic is explored. Some others, Megara's sarcastic tone and sassy personality is played along Hades'. And some other fan works depict them in a softer way than they are depicted in canon.

Fandom
FAN FICTION
 * Hades/Meg (Disney) on FanFiction.Net
 * Hades/Megara (Kingdom Hearts) on FanFiction.Net
 * Hades/Megara (Once Upon A Time) on FanFiction.Net
 * Hades/Megara (Once Upon A Time) on FanFiction.Net

Trivia

 * Both Hades and Megara are two of the many Disney based and owned characters in the Once Upon A Time series.
 * As well as both of them appearing in Kingdom Hearts II and Kingdom Hearts III of the Kingdom Hearts series.