Hadesmon is a Mega (Ultimate in japanese versions) Digimon that appears in Digital Hyuga Chronicles that is the DNA Digivolved form of Metal Phantomon and Infermon.
Hadesmon is the DNA digivolved form of Metal Phantomon and Infermon that was created by Naitojemu when he commanded the DNA Digivolution. Hadesmon forced Leomon and the others back from their Ultimate forms into their Rookie forms. But it was forced to retreat when Tai and War Greymon arrived to help.
He swings his scythe at his foes that unleashs a huge energy blade from it.