Jesmon is a Holy Knight Digimon. It exceeded the perfection shining from the crystal in SaviorHuckmon's chest, assumed its ultimate form, and acquired the title of a "Royal Knight", the highest rank of Network Security. It is endowed with the ability to sense the unusual phenomena and signs of chaos that occur all over the Digital World, and is the first of any of the Royal Knights to come running. It is said that rather than acting independently, it makes a coordinated response with nearby Digimon and the Sistermons, and its operation as a team relies on the others, which is rare even for the Royal Knights, because it doesn't have overconfidence in itself. Jesmon is the thirteenth Digimon considered suitable as a Royal Knight, tempered well by the frequent, rigorous trials of Gankoomon, who noticed the makings of one in the Rookie Digimon "Hackmon" it encountered. Because its "OS Generics" leaves its physical abilities unbound by the laws of the Digital World, Jesmon can overpower any enemy without taking a single scratch.
- Judgement of the Blade (轍剣成敗 Tekken Seibai?, lit. "Furrow-sword Judgment"): Carves the opponent to pieces with the blades on its arms while moving at high speed.
- Weltgeist (Deu: World Spirit) (Schwertgeist, Deu: Sword Ghost): Uses an omnidirectional counter technique alongside "At", "Rene", and "Pol" that meets every enemy attack with their nine blades.
- OS Generics: Temporarily rewrites its own data to perform actions that transcend the laws of nature.
Jesmon is a white-armored Digimon with a red cape that retains is color from its previous form, Hackmon. Its limbs are all blades, and the blue circles beneath its leg swords in its official art make it appear to be walking on water. The DigiCode on its tail-sword reads "FORCED TERMINATION" (), the DigiCode on its left arm sword reads "INITIALIZE" (), the DigiCode on its right arm sword reads "OVERWRITE" (), the DigiCode on its left leg sword reads "TRANSFER" (), and the DigiCode on its right leg sword reads "COMPRESSION" ().
- Jesmon (ジエスモン)
Official romanization given by the Digimon Reference Book and used in the franchise.