Norse Mythology

Norse Mythology covers the Scandinavian region and mixed Paganism and folklore. The Gods were led by the mighty Odin and the Gods resided in a place called Valhalla. There are many legends from this mythology, but probably the most famous is that of Thor, particularly since he has been introduced to the MCU. 
The Gods of Norse mythology were seen as warriors and were often involved in one or war or another. The image above depicts a Valkyrie, a fierce warrior woman who decides the fate of men in battle. If a warrior dies in combat, they are transported to Valhalla as a reward.