Mathayus is the Akkadian warrior that was well known as the Scorpion King among all that knew his identity, and would become an ancient evil that was stopped from decimating the Earth by Rick O'Connell. He is one of the main antagonists (alongside Imhotep) of the 2001 film The Mummy Returns and the titular protagonist of The Scorpion King saga.
In The Mummy Returns, and the first Scorpion King movie, he was portrayed by former WWE wrestler Dwayne Johnson in his first villainous role.