the world eater
Alduin, or the World-Eater, as he is known to the residents of Skyrim, is an immensely powerful dragon. He is depicted as a malevolent force who destroys the world periodically, and the Nords believe that his reappearance heralds the end of time. He is the self-proclaimed First-Born of Akatosh and aspect of Akatosh . His name can be separated into "Al Du In", which means "Destroyer Devour Master". Alduin grew proud and chose to forsake his proper role as World-Eater in favor of conquering Mundus for himself and his fellow dragons. It was Alduin's claims of godhood that convinced Paarthurnax to lead some other dragons in rebellion, and he turned to the ancient Nords for allies. Paarthurnax instructed several of them on how to use the thu'um, which they used to bring about Alduin's defeat by flinging him forward in time. Groups such as the Dragonguard and Greybeards made sure to preserve his legend so the people of the future would remain wary.