SkullCaliphmon is an Undead Digimon whose name and design are derived from a skeleton king. It is an ancient Digimon that at one time held dominion over a vast kingdom that has been turned to dust with age, but its leader lives on, hoping to rebuild his empire one day, earning him the nickname "Skeleton King." He wields a unique, two-bladed sword called "Maranjab."
- Crossfire Hurricane: A wind attack that is capable of manipulating flames.
- Grave Danger: Makes tombstones pop out of the ground. Can be used for defense, though he mainly has them fly around in the air around the opponent and strike them as an attack. When the tombs hit the opponent, the tombs shatter into hundreds of sharp little pieces.
- Siroc Sword: Generates a sirocco wind by swinging his sword. These winds are capable of splitting clear through thick metal. Will also simply attack with his sword, producing the same effects, but at close range.
- Echoes from the Crypt: Creates a giant wind that warps himself or others across a huge distance in a small amount of time.