Eris

Eris is the Greek goddess of chaos, working behind the scenes in the Disney vs. Non-Disney Villains war. At first the partner of Hades, she helps him regain the Underworld only to be discarded once his rule is restored. She then swears vengeance on him and all mortal life.

She is the main villain of the animated film Sinbad: Legend of the Seven Seas.

History
Working with Hades

During the first part of the war, Eris works as Hades's chief ally. They resurrect Dr. Facilier to defeat the Grand Duke of Owls; the witch doctor succeeds in this task. Later, the Egyptian Pharaoh Rameses seeks help from Eris to save the people of Egypt from the Horned King and Maleficent. After eliminating Hexxus and re-taking the Underworld, Hades tells Eris he no longer needs her help. In her rage, Eris attacks the Jolly Roger by unleashing Cetus. The kraken-like being picks off several of Captain Hook's pirates, but Hook kills Cetus by stabbing it with the mast of his ship.

Titan War
The tensions between Hades and Eris break out in an all-out titan war. Hades has a Rock Titan, Ice Titan, Lava Titan, and Wind Titan, while Eris has the Roc, the Red Bull, Sharptooth, and a Dragon. The Rock Titan crushes the Roc, but the Dragon avenges his death by killing the Rock Titan. The Wind Titan pushes Sharptooth off a cliff, while the Red Bull charges into Lava Titan and melts. Though the Dragon survives the fray, it is in no condition to defeat the rest of Hades's titans. Enraged, Eris retreats for the remainder of the war.

Later Plans
Eris, seeking a means of defeating Hades, resorts to petty thievery. She raids the pirate ship of Long John Silver, disguising herself as her old enemy, Sinbad. Silver sees through the ruse, alerting his pirates to the goddess's presence. Eris proves to be too powerful, however, sending a good chunk of the pirates spiraling through space. Eris makes off with a powerful spell book, but not before leaving behind Jafar's lamp. Eris allies herself with the newly released Tzekel Khan. Using the book, Eris and Kan summon the demon Aku.