Short answers, pulled from the story.
Antiquaries such as George Webbe Dasent brought the mythology of Scandinavia back to the popular notice of many people in Germany and England. In both cases, Norse mythology was recognized as the latest surviving form of Germanic paganism.
Richard Wagner borrowed characters and themes from Norse mythology to compose the four operas that make up Der Ring des Nibelungen. He also utilized medieval German sources and Germanized the names of the Norse gods.
Other characters from Norse mythology appear in the Marvel Universe including Odin, Freyja, Brunnhilde Valkyrie, Heimdall, Hela, Balder, Sif, and Fenrir. Loki serves as one of the most prominent villains in the Marvel Cinematic Universe franchise alongside Thor.
The comic miniseries Hammer of the Gods by Michael Avon Oeming and Mark Wheatley from Insight Studios Group was released in 2001. It uses the world of the Norse myths as a setting for its narrative.
The tri-Ace role-playing video game Valkyrie Profile is based on Norse mythology though it deviates at some points. The main character is a valkyrie named Lenneth who represents Brynhild and has been commanded by Odin to gather souls of dead warriors for the upcoming battles of Ragnarok.