A ghostlike Undead Digimon that dwells in graveyards. It is a gleeful fighter that delights in battling even opponents far stronger than itself. Oboromon's strange fixation on winning is thought to be because it absorbs large amounts of grudge-filled data from the Digimon it defeats. However, Oboromon is not egotistical. When it is not in battle, it can usually be found aimlessly wandering around graveyards. It has been witnessed having odd conversations with the skull fused with its left arm. The katana growing from the skull is brittle and shatters easily, but no matter how many times the katana breaks a new one will grow.
Chiyorozu-no-Tachi is a slicing attack using its katana. Oboromon also emits ghostly flames with the potential to burn a vast area with Rashomon. The scarf around its neck can transform into an independently moving apparition when it uses Yugen. The scarf has many uses, such as binding and capturing enemies, and is even strong enough to strike opponents.