Maleficent (currently voiced by Susanne Blakeslee and played by Angelina Jolie) is the main antagonist of Jaden meets Sleeping Beauty. She is also known to herself as The Mistress of all Evil. She placed an evil curse on the fair Princess Aurora, that she put to sleeping death when she touches the spindle of a spinning wheel. Although Jaden, his friends, and the Good Fairies went into hiding with the princess, the prophecy came true. Prince Philip, who was the only one who could save Aurora, had to face Maleficent as a dragon, and successfully killed her. Apparently, she survived, but was only humiliated when her spell was broken. Maleficent became so enraged, when she turned into her dragon form, she evolved into becoming one of the 5 ancient dragons called, Narse, a creature from the island of Lodoss, who served as a servant of the Marmo, & their master, Emperor Beld. Now with this new power, She is bent on getting revenge on those that have defeated her in the past, however she won't be alone, with her is her army of Heartless, only with other villains, such as Pete, Jafar, & unfortunately many, many more.
- Maleficent has the power to control the Heartless in the Kingdom Hearts game series. She attempted to collect the seven princesses of heart in order to acquire Kingdom Hearts a plunge all worlds into darkness.
- Maleficent was the one who corrupted heart broken Ralphie, transforming him into The Ohana's arch foe, Lord Ralphscoe
- She will guest star in Jaden's Adventures of Alice in Wonderland (2010 version).
- She will be one of many villains to face Jaden, his friends, and Mickey Mouse in Jaden's Adventures of Fantasmic!
- Maleficent will become Jeffrey's enemy in Jeffrey & Friends' Adventures of Sleeping Beauty.
- Maleficent will return in Jeffrey, Jaden & Friends' Storm Adventures of Kingdom Hearts: Dream Drop Distance.
- Maleficent will become Aaron's enemy in Aaron's Adventures of Fantasmic.
- Maleficent will also become a valuable ally to Lucifer, & the Kingdom of Darkness.
- Maleficent was the original leader of The Horde Of Darkness before Giovanni. The Eds and the original Atlantean Alliance defeated her in The Ed's Adventures Of The Rescuers Down Under. Maleficent was the one who sank Atlantis in The Ed's Adventures Series. She returned in The Eds Adventures of Looney Tunes: Back in Action.
- In the 2015 movie Descendants, Maleficent will have a Daughter named Mal (portrayed by Dove Cameron).
- Maleficent will become Twilight's enemy in Twilight meets Sleeping Beauty.
- Maleficent will make a cameo in Tammy, DJ, Snowflake and Scooby Doo Night of 100 Frights.