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.
Váli
In Norse mythology, Váli is a son of the god Odin and the giantess Rindr. Váli has numerous brothers including Thor, Baldr, and Víðarr. He was birthed for the sole purpose of avenging Baldr, and does this by killing Höðr, who was an unwitting participant, and binding Loki with the entrails of his son Narfi. He grew to full adulthood within one day of his birth, and slew Höðr before going on to bind Loki. Váli is prophesied to survive Ragnarök.