Dias was a disciple of the Cosmo Beast Style; an outsider who begged Master Alude to teach him, and a good friend of fellow students Regulos and Spica. However, in truth, Dias was a disguised Absolutian known as Absolute Diavolo, who schemed with the Alien Magmas to allow him to steal Alude’s Cosmo Buffalo, the strongest Cosmo Beast. The Cosmo Beast Fighters were massacred, Regulos was captured by the Absolutians, and Dias (or rather Diavolo) stole the Cosmo Buffalo from Alude.