AxeKnightmon

DarkKnightmon
DarkKnightmon is a Dark Knight Digimon whose name and design are derived from the mythological dark knight. It is the fused figure of SkullKnightmon and DeadlyAxemon, who have exchanged cups of brotherhood. Dark Knightmon, who brings the older brother's ingenuity together with the younger brother's mobility, has become a first-class warrior. The skills of DarkKnightmon, who can use the "Twin Spear" it wields to thrust, slash, sweep, or throw as the situation calls for, are very advanced, and it is said there are few people powerful enough to fight DarkKnightmon fairly to its face and defeat it. While DarkKnightmon possesses that much competency, it will use any means to achieve its goals and won't hesitate to get its hands dirty, and sometimes it will even be willing to betray its own comrades. DarkKnightmon, who is furnished to an implacable depth with merit, is an opponent that you don't want to turn into an enemy, if you can help it.

Digimon Xros Wars
Attacks Variations / Subspecies
 * Twin Spear: Stabs with its Twin Spear.
 * Shoulder Blade
 * Undead Soldier
 * Treason Vortex: Spins its Twin Spear to form a vortex of darkness.
 * Choujigen Axe (超次元アックス): Slashes with an axe capable of breaking down the walls between dimensions.
 * MegaDarkKnightmon

"DarkKnightmon + Duskmon"
"DarkKnightmon + Duskmon" is a DigiXros of DarkKnightmon and Duskmon. It has not been officially named.