Hela was married to Karnilla.
According to the reference, Karnilla, who was Balder's lover, took Balder's ring, said "I do," and married him to prevent Balder from being sacrificed. Due to this action, Karnilla became reluctant wives with Hela, and they ended up sharing the throne of Hel.
Here is a summary:
Character | Spouse | Relationship to Hela |
---|---|---|
Karnilla | Balder (initially, through proxy), Hela | Reluctant wife, co-ruler of Hel |