SkullLeomon is a Skeleton Digimon whose name and design are derived from "Skull Leomon". SkullLeomon has a body composed of bone, but it is very strong. His claws are made of Chrome Digizoid. He is a maneless, skeletal version of MadLeomon with metal-tipped tail that looks similiar to SkullGreymon.
- Darkness Blaster: Fires a purple blast of fire from his mouth.
- Full Scale Crusher: Launches the red diamond-like missile on the back of his body.
- Double Slash: Uses his giant claws to tear the opponent to pieces.
- Double Shooter: Shoots orb-bullets of electricity from his mouth.
- Skeletal Fist of the Beast King (Beast King Skeletal Fist): Shoots shockwave of blue fire from his fist that is shaped like a skeletal tyrannosaurus' head.
Armed SkullLeomon is a form of SkullLeomon created when it absorbs other Digimon, including two Troopmon, several Chikurimon, two Golemon, three MetalTyrannomon, two Pteramon, five Triceramon, two Mammothmon, one BlueMeramon, several Kokuwamon, one Parrotmon, two Bullmon, and one Tankdramon, growing in size as well as gaining armor, a chainsaw on its right arm, and a giant cyborg cannon on its left.
SkullLeomon (Delta Mode)
SkullLeomon (Delta Mode) is a member created when SkullLeomon absorbs the data of an Deltamon, growing in size and gaining Delta's heads for its limbs as well as its tail.
SkullLeomon (Musya Mode)
SkullLeomon (Musya Mode) is a form of SkullLeomon created when it absorbs the data of several Musyamon. SkullLeomon growing in size as well as gaining samurai armor, while he uses his samurai sword.
SkullLeomon (Final Mode)
SkullLeomon (Final Mode) is a form of SkullLeomon created when it absorbs the data of several DarkTyrannomon. SkullLeomon grows in size and gains metallic claws, while his skeletal body became a muscular body composed of DarkTyrannomon's flesh.