Who was the most powerful Norse god?
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.
Giant
In Norse mythology, the Jotun ("jötnar" in Old Norse, a cognate with "ettin") are often opposed to the gods. While often translated as "giants", most are described as being roughly human sized. Some are portrayed as huge, such as frost giants ("hrímþursar"), fire giants ("eldjötnar"), and mountain giants ("bergrisar").