High King Morgrim Elgidum was the nephew of High King Gotrek Starbreaker, cousin of Snorri Halfhand and one of the greatest Dwarf warriors since Grimnir. Along with his uncle, Morgrim led the the Dwarfs during the War of Vengeance and personally killed Prince Imladrik, brother of Phoenix King Caledor I. He became known as Elgidum or "Elf-doom" during the war for the great number of Elves he killed. It was prophesised many years before the War that Morgrim would slay the Dragon of Tor Alessi and become a great King; which he did upon the death of High King Gotrek.