Dexmon

Dexmon is a Ghost Digimon whose name and design are derived from "Death X". Since it doesn't have its own DigiCore, this type of program cannot be classified as a Digimon, and although it appears solid, it has no actual substance. If it detects a DigiCore it will absorb it into its body and disintegrate it, then reassemble it in a perpetually repeating set of processes named "Process '0'" through "Process 'F'". Although it is a simple program, it is thought that defeating it is within the realm of impossibility. Unless there are DigiCores nearby, it will go into stasis, but as long as there are DigiCores it will not cease.

Digimon D-Cyber
Attacks
 * Process "0": The first of a set of perpetually repeating processes which disassemble and reassemble the DigiCores of its opponents.
 * Process "F": The last of a set of perpetually repeating processes which disassemble and reassemble the DigiCores of its opponents.