Wraith

"The Qui-shen, the Wraith, is one of the most dangerous creatures in all the known lands.. a soul-sucker. According to legend, it marks its victims and removes their souls; damning them for all eternity."

- Mulan to Aurora The Wraith, also known as Qui Shen, is a character on ABC's Once Upon a Time. It débuts in the first episode of the second season.

Trivia

 * Wraiths are common in folklore and fairytales and are often seen in other stories, although often not by the same name.
 * According to Regina, the Wraith cannot be killed as it is already dead.
 * Show creators Adam Horowitz and Edward Kitsis reveal the Wraith cannot chase multiple victims. If there is already a branded victim it is after and another person becomes marked, the Wraith will permanently stop pursuing the first target and focus its full attention on only actively hunting the most recent human who touched the medallion and is imprinted for death.

Appearances
Note: "Archive" denotes archive footage.