From the website:
Logan Grimnar epitomizes the noble fury of his people. He is a figure of awe and the warrior king of the Space Wolves. A fearsome warrior with immense martial pride Grimnar never backs down from a fight. Drawn into battle on an ancient relic of the Chapter known as Stormrider and armed with his axe Morkai - an ancient artefact of immense power - the Old Wolf inspires such unshakable loyalty that he has led the Sons of Russ into unimaginable terrors and emerged with victory grasped firmly in his claws.