Shakkoumon is created when Hida Iori and Takaishi Takeru's partner Digimon perform a DNA Digivolution (or a Jogress Evolution, depending on the medium) and fuse together. Due to its rounded shape ...
This is reflected by the strange Ultimate-level Digimon they wind up with after Angemon and Ankylomon fuse. At first glance, Shakkoumon looks nothing like the angelic Angemon or the dinosaur ...