Wraith

The Wraith (Qui Shen) is a minor character on Once Upon a Time. It makes its debut, and only appearance, in the first episode of the second season.

History
In Storybrooke, Mr. Gold holds the same medallion given to Aurora. He uses it to summon the Wraith to Storybrooke to take Regina's soul from her in retaliation for locking Belle in the asylum for 28 years. Although the Wraith nearly takes Regina, Mary Margaret, David, and Emma rescue her from the Wraith. In an attempt to get rid of the Wraith and save Regina for Henry, the four of them lure the Wraith to the Storybrooke town hall, where they attempt to use Jefferson's hat to send the Wraith away. They succeed, but Emma and Mary Margaret are pulled into the portal with the Wraith, to Fairytale Land.

The Wraith appears in Aurora's Palace seconds after Mulan and Prince Phillip find Aurora. The Wraith wears a golden medallion around its neck that is grabbed by Prince Phillip, which marks him for death by the Wraith sucking out his soul. The Wraith later does this in Fairytale Land. The medallion is later given to Aurora by Mulan. ("Broken")

Trivia

 * The Wraith cannot be killed because, according to Regina, it is already dead.