The Norse believed that the universe emerged from an empty gulf separating worlds made of ice and fire, inhabited only by a mysterious hermaphroditic being called Ymir. Ymir was the mother and father of the race of the jotuns (chaotic nature spirits).
Eventually, Buri came into existence and his grandchildren Vili, Ve and Odin wanted to create the world and fill it with life. So naturally they had to kill Ymir and make the world out of his body and the sky out of his skull. His blood became the sea, his bones rocks and mountains and his brains the clouds.
Yikes.
#9 Odins ravens were named Hugin and Munin.
Runes were not magical, they were letters just like the abc we use today.
#11 The wolf that tok Tyrs arm was named Fenris.
In fact, Vikings weren't more or less brutal than other warriors of eastern Europe. They were described as if only because writtend sources were written by clergy, which were targeted by first raids, when Vikings were payen. Because no christian would attack a church and Christian church wealthy it explain why first sources talks about Vikings as calamity and stop at the moment Vikings convert themselves to christianism.