Caius Veiovis , 31 , has undergone extensive implants to create horns on his head .
Caius Veiovis , 31 , had the number of the devil - 666 - tattooed on his forehead .
Caius Veiovis , 31 , has undergone extensive implants to create horns on his head and had the number of the devil - 666 - tattooed on his forehead .