AncientSphinxmon

AncientSphinxmon is an Ancient Mythical Animal Digimon whose names and design are derived from "Ancient" and the mythical. It possesses the attribute of "Darkness", and is one of the legendary Ten Legendary Warriors that saved the ancient Digital World. It is set at the opposite extreme to AncientGarurumon as a being born from darkness. It rules over the destruction and annihilation of all existing or living things, and is feared as the "Deadly Dark Beast". Its abilities were later passed on to the "Mythical Animal" and "Demon Beast Digimon".

Digimon Story: Super Xros Wars Red/Blue
If you DigiXros during a battle Nefertimon, SkullScorpiomon, SkullBaluchimon and Digitamamon, they'll form AncientSphinxmon and attack with "Necro Eclipse". It can also be formed from a Digimelody.

Attacks
 * Dark Blast: Fires a laser beam alongside a roar.
 * Necro Eclipse: Attacks with the ultimate annihilation technique which completely envelops the opponent in the darkness of death.