Maleficent is the head of the grand council of the Villain League before Facilier was ordered to recruit Cynder to the dark side once again. She is also the main antagonist of Sleeping Beauty.
To make a long story short, Maleficent represents pure evil. She is ruthless and devious, and will do whatever it takes to achieve her goals. Additionally, she is very spiteful, which is shown by taunting Prince Philip after she captures him. Her most famous quote "You poor simple fools. Thinking you could defeat me?! Me! The mistress of all evil!" indicates that she is somewhat narcissistic. She thinks herself above everyone, even calling her closest allies "her pets".
Maleficent appears in the form of a tall, slender, beautiful, pale green skinned woman with a narrow face and a prominent chin. She also has yellow eyes and a horned headdress, which is symbolic of her dark magic. She is clad in a black and purple robe with bat wing-like edges, and wears a gold ring with a large mysterious circular black stone in it. Maleficent is an evil fairy, unlike the other three fairy godmothers in the movie, and her evil enables her to perform many magical and powerful spells. She carries a staff with a glowing green orb at the tip through which she casts her spells, which include an ability to teleport herself, or send bolts of lightning at enemies. She is also capable of shape shifting at will into numerous forms, including a floating hypnotic light resembling a will-o'-the-wisp and a massive, monstrous black and purple dragon. She is not at all comical or goofy like some of the other Disney villains, although she does at times display something of a dark sense of humor. Her minions are a legion of goblins and troll-like creatures. She is also frequently accompanied by her pet raven, called Diablo. She seems to have a minor quirk in regards to holding light objects, as she seems to extend her pinkie when holding a torch in the forward direction, as evidenced during her capture of Prince Philip.
Role in the film
Placing a curse on Aurora
At the christening of the newly born Princess Aurora, the Three Good Fairies come to bestow three gifts on the child: Flora’s gift is Beauty, and Fauna’s is Song. Before Merryweather has a chance to give the child a gift Maleficent arrives with her Raven, perched on her staff. Angry at not receiving an invitation, she curses the child, decreeing that, before the sun sets on Aurora’s 16th birthday, the child shall die, by pricking her finger on the spindle of a spinning wheel. She then leaves, cackling. Merryweather, unable to undo the entire curse herself, is able nevertheless to alter it such that Aurora will not die, but merely enter a deep sleep, to be broken with true love’s kiss.
As Aurora's 16th birthday draws near, Maleficent punishes her Goons, who have stupidly been searching for a baby for 16 years, to find the princess. She then sends her raven Diablo to search for the princess. Diablo manages to find the hiding location of Aurora and the fairies. With this new information Maleficent plans her next move. When the princess and the fairies return to the castle late that afternoon, Maleficent finds Aurora alone and, as a hypnotic apparition resembling a will-o-the wisp, lures her up a secret stairway in the castle atop a high tower to a spinning wheel. She pricks her finger and falls to the floor. The fairies arrive in time for Maleficent to scoff at them; she then disappears. She and the Goons go to the cottage, where they wait for Prince Philip, who had arranged to meet Aurora (whom he only knew to be as a peasant girl). When he arrives, they capture him and take him to Maleficent's domain, the Forbidden Mountain.
Flora, Fauna and Merryweather rescue Philip and give him the Shield of Virtue and Sword of Truth; this is noticed by Diablo, who fetches the goons. The prince and fairies are still able to escape, and Merryweather turns Diablo to stone. However, Maleficent emerges, sees Philip escaping and attempts to strike him down with lightning. As he continues, she summons thorns to surround Stefan’s castle. When she sees that Philip, with help from the Good Fairies, is able to hack through the thorns, she appears before him, and transforms into an enormous dragon. The two battle, but Philip eventually kills her when Flora, Fauna and Merryweather enchant his sword. She falls from a great height, and Philip looks down to see that she has become her cloak on the land; the Sword of Truth, still embedded in the cloak, turns black.
Role in the series
Maleficent serves as the Villain League's grand high sorceress and main instigator of the Heartless invasions aside from the darkspawn bird Fagin. She has the secret ability to summon a keyblade of darkness, forged from the fires of hell and with the ability to make Maleficent into her dragon form and to open dark portals for her to get to other worlds. She is also mentioned to be the second in command of Deathwing's forces in the Jak series, although how that works with her being Mirage's dragon in the Villain League is anyone's guess, it could be that the Jak series is more, alternate then the Spongebob series, like, another dimention thing.
It is soon revealed in Spirited Away that in a one night stand with the Dark Dragon, she became the mother of Kohaku, a.k.a Haku. She wields the Cruel Essence keyblade, as well as owns a keyblade should guard armor that can allow her to be enshrouded in Keyblade Armor. However, the only time she used this was when Master Xehanort mind-controlled her during the crisis of the Great Cycle.
Her appearance in Disney Castle in KH 3D to threaten Minnie in person contradicts the existence of the Cornerstone of Light, to keep her and her villain forces out of the castle in the first place. However, this could be explained in that Master Xehanort's extensive enhancements to the timestream in order to awaken the 13 Seekers of Darkness caused a massive backlash of dark and time energy to cancel out the Cornerstone of Light's protective spell, allowing Maleficent brief access to make her attempt for Jiminy's Journal. Once she finds out about Master Xehanort's true scheming and her pawn role within it, Maleficent realizes that the data of the worlds would not help in the future and so decides to pay the old master a visit to warn him of her coming fury and reawakened powers of controlling that which sleeps in people's hearts, robbing his youngest self of the ability to control the Dream Eaters.