Maleficent

"But, 'beast' is so harsh. I prefer Maleficent."

Maleficent was an evil witch who lived in the fairytale land, and who presumably had a grudge against Aurora's family. At some point, Maleficent was granted access to the Dark Curse by one of her only friends, Queen Regina, traded for her famed sleeping curse. When said sleeping curse failed to have the results Regina expected, she demanded to be given the Dark Curse back, and a battle ensued between the two witches, one which Regina won. When the curse was set in motion, Maleficent became trapped in Storybrooke, Maine, in a form rather different to that of the curse's other victims: her dragon form.

Before the Curse
At some point, Maleficent, with an apparent hatred for the family, enacted a sleeping curse on Aurora and her mother at separate times.

Some time after, Prince Charming makes a deal with Rumplestiltskin in order to retrieve his mother's ring. He must conceal a bottle of true love encased in a protective egg inside a great beast. Maleficent enjoys a quiet moment in her home when Prince Charming suddenly appears with his sword to Maleficent's throat. Maleficent thrusts Charming back with a magical blast and reveals that she is “the beast.” She then magically blows out all of the candles in the room. Shrouded in darkness, Charming tells the witch to show herself, and slowly she reveals herself as a monstrous, fire-breathing dragon. A battle ensues, with Prince Charming finally forcing the egg down Maleficent's throat. His work done, Charming leaps through a stained glass window, diving into the waters far below.

Frustrated, Queen Regina goes to Maleficent to get the Dark Curse back. Maleficent says they made a deal and the curse belongs to her now. She keeps the curse held in the orb of her staff, and when she refuses to willingly hand it over, Regina challenges her. They have a magic spar, and just as the Queen readies many enchanted weapons to throw at her pet unicorn, Maleficent jumps in front to intervene and is tied up with the metal of the chandelier, and is thrown against the wall. She believes she will be killed, but the Evil Queen states she would never do that since Maleficent is her only friend. Free to get the curse from the orb of Maleficent's staff, the Evil Queen is warned of the curse's dangers, and how it would leave a void in her, but she takes this all in stride and leaves.

Season 1
In Storybrooke, Maleficent's dragon form is trapped deep below the town's library. In order to retrieve the same bottle of true love implanted inside of her by Prince Charming, Emma must face Maleficent. Quickly realizing she's not much good with a sword, she drops her father's weapon and draws her gun. She fires at the dragon, but the bullets seem unable to penetrate the beast's scaly hide. Emma runs, ducking behind a large pillar of rock. The dragon circles around, landing on a nearby outcropping to get a better angle of attack. But the outcropping crumbles and the dragon plummets into the darkness. Emma peers over the edge, but sees no sign of Maleficent. Suddenly, the dragon flies upward, the gust from its great wings knocking her back as it spots her. She fires her gun again, desperately, but all it seems to do is make the beast angrier. The dragon turns on her when she hurls the sword into its throat. The sword starts a chain reaction and an explosion engulfs the dragon, destroying it. As cinders blow around the cavern and smoke wafts amongst a giant pile of ash, Emma spots the golden egg containing the love potion, and gets her hands on it, at last.

Origins
The character of Maleficent is based on the homonymous character of the 1959 film adaptation by Walt Disney of the popular fairytale, "Sleeping Beauty", by French author Charles Perrault, also known for its version by the Brothers Grimm ("Little Briar Rose"). The general story of Sleeping Beauty, the version everyone knows, tells of a beautiful princess cursed by an evil fairy (Maleficent) as a baby - when she reaches a certain age, the princess will prick herself on a spindle and fall into a deep state of sleep (thought the wicked fairy's intent is for her to die, another fairy partially reverses this), from which she then awakens by a kiss of true love. This is the story presented in the Disney movie, and the one Once Upon a Time bases the story of Maleficent on. However, in some original versions of the story, several elements varied. The Perrault tale was divided into two parts. In the film, Aurora is put to sleep by a curse enacted by the character of Maleficent, who is also responsible for her state of sleep in this series. Several other adaptations of "Sleeping Beauty" have been made over the years. Additionally, Aurora comes from the name L'Aurore, which is the name of the sleeping beauty's daughter in some versions of the tale, which is presumably why the original sleeping beauty in this series is Aurora's mother, and not her.