At first, it's the Digimon Sovereign, a group of four Mega-level Digimon modeled after the four mythological beasts in Chinese and Japanese folklore. though only three of them do not fight the Digidestined: Azulongmon Zhuqiaomon Bahuimon Azulongmon They led a band of twelve Mega-level Digimon who were fashioned after the Chinese Zodiac called the Devas The D-Reaper, a powerful virus 'creature', takes over as the 'true villain' near the end.