Once Upon a Time Fanon Wikia

Thor: Loki, I thought the world of you. I thought we were gonna fight side by side forever, but at the end of the day, you're you and I'm me, and... I don't know, maybe there's still good in you, but let's be honest – our paths diverged a long time ago.
Loki: We are. It's probably for the best that we never see each other again.
Thor: "Yeah, that's what you always wanted.

—Loki to his brother

Loki, also known as Loki Laufeyson and Loki Odinson is a character in the Marvel Cinematic Universe and the fanon universe of Once Upon a Time. He is portrayed by Tom Hiddleston and is the counterpart of Tom Winters.

Loki is based on the god of the same name from Norse mythology and the Marvel character of the same name.


After Ragnarok, and the battle won, Loki marries Sigyn, a woman he met and his wife is about Thor and Sif having their first child together, but Loki notices how Sigyn wants a child. However, a vengeful Asgardian sorceress sends Loki and Sigyn to Storybrooke, Maine, and Torunn and Sif to a land without magic, and Thor to the New Enchanted Forest, separating the family. With aid from Emma and Hook, they are able to open a portal to one of their family members: Thor. In this new realm, the duo reunite with Thor, who is searching for his wife and daughter. Sigyn expresses to Loki many times of having a child, but he states it can never be.Eventually, they have a daughter, Sigyn, who becomes a  member of the Young Avengers

Before the curse is cast, something tragic happens to Loki, causing Regina to cast the dark curse.


  • Ice Magic - Ability to control and create ice and cold temperatures for various purposes. Loki uses this type of magic only through the Casket of the Ancient Winters.


Angerboda †
Queen FriggaFarbauti
HelaThor Odinson
SifLoki Laufeyson
Torunn ThorsdottirSylene


  • Solid lines denote blood parent-child relationships
  • Dashed lines denote marriage, adoption relationships and relationships that result in offspring
  • † denotes the deceased.
  • Hela's mother and Odin were previously married.
  • Loki is the adopted son of Frigga and Odin.


Production Notes

  • Loki's actor, Tom Hiddleston, once auditioned for the role of Thor Odinson, but the role fell to Chris Hemsworth. Instead, he accepted the role of Loki.
  • Charlie Cox auditioned for the role of Loki, but was later cast as Matt Maddock.

Other Notes

  • Before Guardians of the Galaxy Vol. 2, there were some debates on who would be Quill's biological father. Loki was one of the canidates, along with Ego, J'son of Spartax, and even Yondu Udonta. However, it was revealed Ego would be Quill's biological father.