Magne's brother, Laurits was actually fathered by Vidar, not Asbjørn, and is Loki
There’s the fact that he is Magne’s brother, and Magne is Thor (after a fashion). In addition, their mother is implied to have had an affair with Vidar at some point. Laurits has dark hair, like Vidar, as opposed to the dirty blond of his mother and brother. Since Vidar is a giant, this would make Laurits part-giant, which would fit with him being Loki. In the second episode, there’s a school dance, and the giant siblings get really into dancing together, and Laurits joins in as if he already instinctively knows all the moves while everyone else watches. There’s also his generally trollish personality and implied quick-wittedness. Also he looks sort of a little bit like Tom Hiddleston's Loki, so there’s that.- Episode one of Season Two confirms he's Vidar's son, after Vidar and Turid had a drunken affair one night. And he's definitely as interested in following in Loki's footsteps (for good and ill) as Magne is in embracing his role as Thor.
Magne isn't actually Thor, but Thor's son Magni
While Wenche calls him Thor and his name Magne might just be a Mythology Gag, there is the fact that in Norse Mythology, Magni is one of the survivors of Ragnarök and inherits Mjölnir together with Modi. Iman is Freyja
In the trailer for season 2, she seems to understand what's going on, telling Magne that he'll need friends to fight the war, and says that she's smart and good at flirting, two things Freyja is known for. (In addition to being the goddess of love, Freyja is also the goddess of war and witchcraft.) She's also shown immediately after Magne sees a bird of prey, and Freyja is able to turn into a falcon.- Seemingly confirmed, as the episode in which she joins Magne to fight the giants and discovers her own powers opens with a text primer about Freya, and Iman is frequently seen wearing a beautiful intricate necklace, and another of Freya's magic items was the necklace Brisingamen. It's Wenche who turns into the falcon, however.
Saxa is pregnant
In Norse Mythology, Magni’s mother is named Jarnsaxa. So it’s possible that Magne and Saxa have conceived a child.