However, here are some of the most common and important characters in the Norse mythology version of the story:
Main Characters:
* Sigurd: The titular hero, a powerful warrior known for his courage and skill with weapons. He's the son of Sigmund, a legendary hero in his own right.
* Regin: A dwarf who raises Sigurd and teaches him blacksmithing. He orchestrates Sigurd's slaying of the dragon Fafnir, seeking to gain the treasure the dragon hoards.
* Fafnir: The fearsome dragon guarding the treasure, eventually slain by Sigurd.
* Brynhild: A powerful Valkyrie who falls in love with Sigurd, despite her being betrothed to another. Their relationship is complicated by the magic of the dragon's blood, which renders Sigurd unable to see Brynhild's true form.
* Gunnar: The king of the Burgundians, betrothed to Brynhild.
Other Important Characters:
* Gudrun: Gunnar's sister, who marries Sigurd after he kills Fafnir. Their marriage is fraught with conflict, as Gudrun is deeply in love with Brynhild's betrothed, Atli.
* Atli: The king of the Huns, who marries Gudrun and eventually orchestrates the death of both Sigurd and the Burgundians.
* Grimhild: Atli's mother, a powerful sorceress who plays a crucial role in the tragedy that unfolds.
Variations:
Keep in mind that this is a simplified overview. The characters' roles, relationships, and motivations can vary significantly depending on the specific version of the story.
Here are some other versions to be aware of:
* The Poetic Edda: A collection of Norse poems which features the story of Sigurd.
* The Prose Edda: A 13th-century book by Snorri Sturluson that retells and summarizes Norse myths, including the story of Sigurd.
* The Volsunga Saga: An Icelandic saga which provides a detailed account of the Sigurd story, incorporating elements from both the Poetic and Prose Edda.
Let me know if you'd like more details about a specific version of the story or any particular character.