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We're here. All of us, as promised, in the flesh.. and now it's time to get to work, to do what Dark Ones do best... snuff out the light.
~ Nimue to Captain Hook
Yes. I'm Nimue. And you... are Emma. How pretty. The first Dark One and the newest Dark One standing as sisters!
~ Nimue to Emma Swan.

Nimue is the secondary antagonist in ABC's Once Upon a Time. She serves as the secondary antagonist of the first half in Season 5 (serving as the most pivotal agent of The Darkness).

Nimue is the very first Dark One and the creator of the Darkness. In the fifth season, Nimue hatches a plan to snuff out the light in Storybrooke and joins forces with Captain Hook to achieve her goals.

She was portrayed by Caroline Ford, who also portrayed by Lilith the Succubus.


Before First Curse

She was the true love of the sorcerer Merlin, with whom she went on a quest with one day to make a sword out of the Holy Grail, stripping him of his powers and allowing him to be mortal and be with his love. However, during an encounter with Vortigan, the man who destroyed her town looking for the Grail she is fatally stabbed by him. However, she recovers shortly after due to drinking from the Grail herself, and rips Vortigan's heart out, with the intention of killing him. Merlin warned her that doing so while having the power from the Grail would cause her to succumb to the Dark Curse, which she refuses to acknowledge. As such, she crushes Vortigan's heart and kills him. This allows the darkness from within Vortigan's heart to infect her, transforming Nimue into the very first "Dark One". The Promethean Flame is extinguished to an ember, and Nimue goes on to shatter Excalibur into two pieces, in order to prevent Merlin from ending the immortality of both of them. Then, Nimue apologizes to him for her actions, but Merlin says no, that he is the one who is sorry. As the First Dark One, she now wears Vortigan's mask and clothing as her own.

Merlin used one half of the snapped Excalibur to create the Dark One's Dagger, biding the soul of the Darkness' host to it and forcing whomever the unfortunate soul is to be enslaved by the bearer of the Dagger. Shortly after accomplishing this feat, Merlin intended to use the Dagger to kill Nimue, blaming the Darkness for killing the woman she loved (by this time, the audience is led to believe that Vortigan is meant to be the Dark One), but cannot bring himself to do it. Dropping the Dagger. Merlin is transformed into a tree by Nimue, who departs with the Dagger.

At some point, she constructs the Vault of the Dark One, which would allow the current Dark One to come back to life using the Darkness. It would later be used centuries later by Baelfire, son of the Dark One Rumplestiltskin, to bring back his father after he had perished. At another point, she tried to steal Merlin's most-treasured item, the Sorcerer's Hat (which had the power to cleave her soul from the Dagger and not be controlled by it), from his Apprentice, but is unable to take it.

She is apparently killed off by her successor and is sent to the Underworld for her evil. However, she is able to communicate from the Underworld through the mind of the current Dark One.

Before Third Curse

When Emma Swan, the new Dark One, summons her to extract the last flame ember of the first fire (the Fire of Prometheus, which was used to melt down the Holy Grail), she mocks Emma for being nothing without Darkness. Emma rips the ember needed to complete Excalibur from her in response saying that she was never nothing. Nimue reminds Emma that she'll still be waiting in Emma's mind, but she had still decided to choose good over evil. A while later, she persuades Captain Hook, who also became a Dark One after Emma used the sword to save his life, to sacrifice Merlin's heart to create a Dark Curse to return everyone to Storybrooke where Hook may have revenge on Rumplestiltskin. Being the third time that the dreaded Dark Curse is cast, everyone is returned to Storybrooke; however, Emma manages to remove everyone's memories of the past six weeks in Camelot so that no-one would know that Hook is the Dark One.

After Third Curse

In Storybrooke, Nimue and the past Rumple appear from Emma's mind along with all other Dark Ones and watch her complete Excalibur.

Hook is taken by Darkness Rumple to the pond which has a connection to the Underworld, and he sinks his hook under the surface. The hook, covered in the blood of a former Dark One (Gold, although still alive) allows all Dark Ones, Nimue included, to return to the world of the living. Nimue, wearing her mask, leads the group and walks on the water's surface towards Hook, graciously accepting his hand and removing her mask. She tells Hook they must do what all Dark Ones were meant to do - snuff out the light. Hook welcomes her to Storybrooke as the Dark Ones descend upon the town, bringing the full power of the living Darkness with them.

Nimue is the main antagonist of the Winter Finale, "Swan Song". She marks each of the heroes with the mark of Charon, sacrificing their lives for the Dark Ones'. She blasts the heroes and teleports them to the lake, where all Dark Ones are gathered. When Emma tries to stop her and Hook, she attacks Emma and easily incapacitates her. Hook snaps out of his evil, saying that this is enough. He turns on Nimue. She smirks, saying he can't defeat her, but he responds that he can before using Excalibur on her, causing her to disintegrate slowly and be sucked into the sword as part of the Darkness. Emma tearfully kills Hook with Excalibur, causing the whole situation to end and all the Dark Ones of the past to be sent back to the Underworld. The Mark of Charon disappears from all the heroes and Storybrooke is saved, but at the cost of Hook's life; this begins Emma's quest to the Underworld.

Powers and Abillities

  • Magic - As the first and most powerful Dark One (aside from Rumplestiltskin after he gained all the Dark Ones power), Nimue is immesurably powerful sorceress, equal in power to Merlin himself and surpassing most other Dark Ones, even Emma Swan, who she easily overpowered.



  • Nimue was also the main antagonist of the first season of the television series Merlin.
  • In "Dreamcatcher", male actor Guy Fauchon is credited on the press release and in the episode credits as "Vortigan", whose face was covered by a mask in the episode. However, thanks to the flashbacks shown in the seventh episode of the fifth season, it was proven that the character billed as "Vortigan" in "Dreamcatcher" is supposed to be Nimue, a female character, disguised by a mask.
  • Nimue is a Bigger Bad to the series, as she is the one who started the cycle of the Dark Ones, and the first to harness the power of the Darkness. On the converse side, Vortigan is this to her; had he not killed her family, she would've never become the Dark One in the first place, and thus the Dark One would have never existed.
  • She and Fiona are arguably the main antagonists of the entire series, given that their actions are what led to most of the events. Nimue is the one who created the Darkness, leading to the creation of most of the other antagonists. Nimue's creation of the Darkness eventually led Rumple into being the Dark One, which led him to train Cora Mills, Regina Mills, and Zelena, which led Cora to train the Red Queen. It also leads to Emma Swan's turn as an antagonist. While Fiona is the one who created the Dark Curse and caused Rumple to go on his dark path.
  • She was portrayed by Guy Fauchon in the episode Dreamcatcher, during the scenes when she was dressed as the Dark One.


           OnceUponATimeTitle.png Villains

Main Villains
Regina Mills/Evil Queen | Cora Mills | Greg Mendell | Tamara | Peter Pan | Zelena | Ingrid the Snow Queen | Rumplestiltskin | Maleficent | Cruella De Vil | Ursula | Emma Swan | Nimue | Hades | Fiona | Lady Tremaine | Drizella | Jafar | Anastasia | The Darkness

Secondary Villains
Captain Hook | Felix | The Shadow | Flying Monkeys | Isaac Heller | King Arthur | Mr. Hyde | Gideon | Mother Gothel | Jabberwocky

Other Villains
Anita | Blackbeard | Blind Witch | Bo Peep | Caterpillar | Chernabog | Cheshire Cat | Clorinda | David | Duke of Weselton | Gaston | Henry Jekyll | Isla | Jack | Jonathan | King George | Knave of Hearts | Lady Tremaine | Lily Page | Medusa | Monstro | Mr. Smee | Prince Hans | Prince James | Sheriff of Nottingham | Sidney Glass | Snow White | The Walrus & the Carpenter | The Woodcutter | Wraith

Dark Ones | Queens of Darkness | Lost Boys Coven of the Eight