Alduin

The World Eater, an extremely powerful dragon. He is depicted as an evil force that periodically destroys the world, and. Nords believe that his rebirth foretells the end of the world. He is the firstborn of Akatosh, the older brother of Paarthurnax, and a self-proclaimed version of Akatosh. According to Paarthurnax, Alduin was once called Akatosh's greatest creation.