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.
Mjölnir
In Norse mythology, Mjölnir (; , ) is the hammer of Thor, the Norse god associated with thunder. Mjölnir is depicted in Norse mythology as one of the most fearsome and powerful weapons in existence, capable of leveling mountains. In its account of Norse mythology, the "Prose Edda" relates how the hammer's characteristically short handle was due to a mistake during its manufacture. Similar hammers (Ukonvasara) were a common symbol of the god of thunder in other North European mythologies.