In the History of the Langobards by Paul the Deacon, Odin and Frigg disagree over which tribe to favor in the Winnili/Vandal war. Tricky girl that she is, Frigg manages to trick Odin into choosing the Winnili. Here's how she does it: Odin has sworn that he’ll favor whichever tribe he sees upon first waking up one morning; clever Frigg turns the bed so that he sees the Winnili first. Done and done.
In the Deeds of the Danes by Saxo Grammaticus, we see some Northern kings create a golden statue of Odin. Frigg is so jealous of it that she sleeps with a servant who agrees to destroy the statue for her. Odin is pretty insulted, so he leaves in a huff for a few decades, and Frigg takes up with a guy named Mith-othin, who helps her take control of Odin’s properties.
In Snorri Sturluson’s account of the history of the kings of Norway and Sweden, the Norse gods are the ancestors of the human kings. Frigg doesn’t come off too well in this story: she sleeps with Odin’s brothers, Vili and Vé, after Odin has been off for a while. Not cool, Friggster.
When Thor becomes a superhero in the Marvel Comics universe, his stepmom, Frigga, comes along for the ride. She plays the same protective role to Balder that she does in the mythology, here casting spells to protect him from harm.
In this parody of the Marvel comics universe on the Cartoon Network, Frigg (here called “Frigga”) shows up in two episodes. In one, she’s concerned that Thor doesn’t have a girlfriend (oh my); in another, she must find a way to get Odin back when a magic spell makes him fall in love with another woman.
Rene Russo plays Frigga in the feature film version of the Marvel comic.