Tyr God of war and battles. Tyr is a god of war and the sky god, the bravest of all the gods. He was concerned with justice and with fair treaties. It is thought that at one time Tyr was even more important than Odin and more ancient. By the time the Norse myths were written down, Tyr’s importance had diminished, and not much is known about him. In some stories, Tyr is the son of the giant Hymir; in others he is the son of Odin.