Thor (comics)
Thor, a founding member of the superhero group the Avengers, often battles his evil adoptive brother Loki, a Marvel character adapted from the Norse god of mischief. He is among Marvel's most powerful superheroes. Many recurring characters in his stories are based on Norse Mythology. Apart from this main superhero, Marvel features a number of characters based on him.
Cthulhu Mythos deities
An invisible wolf-like fiend similar to Fenrir of Norse mythology (if not coincident). Mh'ithrha ("Arch-Lord of Tindalos") is the lord of the Hounds of Tindalos, and the most powerful. Although not an actual "Outer God" as such, its form and astounding powers defy standard classification. Mh'ithra's eternal battle with Yog-Sothoth is said to be legendary.