When Jacob got sent into the Nightmare Dimension by Ghoulmon, he had to face his fear of breaking his arm again, he then got the Spirit of Resistance and Spirit Digivolved to Boneponmon.
Boneponmon is a short Ape covered in casts with two halves of a broken bone for a weapon, numerous bones can be seen sticking out of random parts of his body. He is similar to Apemon but with grey fur.
- Bone Stab; Stabs the foe with it's broken weapon.
- Pain Pummel; Pummels the foe with hard fists.