Current Great Wolf and Chapter Master of the Space Wolves.
Logan Grimnar is the Chapter Master of the Space Wolves Space Marines Chapter. He is one of the most belligerent and headstrong Chapter Masters in the Imperium of Man, as well as perhaps the greatest Wolf Lord of all time. He remains loyal to the Emperor of Mankind and the great Primarch of the Space Wolves, Leman Russ. Grimnar has been the Chapter Master of the Space Wolves for over 700 standard years and is one of the oldest Chapter Masters of a Loyalist Space Marine Chapter. Like his fellow Space Marines, Grimnar is a fearsome warrior with great martial pride. He has led his Great Company against many enemies of the Imperium and has shown a renowned thirst for battle, which some say, even rivals that of their legendary Primarch Leman Russ. Logan, or the “Old Wolf” as he is known by his brethren, is an extremely powerful warrior who will always fight to the end in pursuit of what he believes in; both in the name of the Emperor and for the lives of his beloved Space Wolves. Grimnar is believed by some observers to be one of the most powerful warriors in the Imperium, greater even than other Space Marine Chapter Masters such as Lord Commander Dante of the Blood Angels, Supreme Grand Master Azrael of the Dark Angels, and even Lord Marneus Calgar of the feared Ultramarines.