system now large enough to handle this load, Azulongmon feared it might awaken the D-Reaper and enlists the DigiGnomes to transform the "Catalyst" program into Calumon and send the Digimon into the human world. But D-Reaper awakened as the Sovereign Digimon attempted to find solutions to stop the D-Reaper before it overwhelms them, Zhuqiaomon sending the Devas to retrieve Calumon to amass an army despite Azulongmon seeing it would complicate matters further. When the Tamers arrived to the Digital World and fought their way to Zhuqiaomon, the D-Reaper secretly captures Jeri and replaced her with the first of its "ADR's" or "Agents of the D-Reaper", extensions of the D-Reaper's will created from the assimilated data of those it had consumed in the past. Developing an interest in its creators and adding it into its perimeters, the D-Reaper uses Hynpos's system to manifest its main body, holding its Kernel Sphere which Jeri was being held captive in, into the human world. The D-Reaper then turned the Shinjiku Metropolitan Building into its base of operations while converting the surrounding area into the D-Reaper Zone. Other than its Jeri-Type Agent, the D-Reaper creates more ADRs as drone units that function as extensions of the D-Reaper's conscious to study human behavior while expanding its territory. Unlike the Jeri-Type, the succeeding ADRs operate outside the D-Reaper Zone by a red life line, similar in function to umbilical cords. When these cords are severed, the Agent becomes much weaker and easier to defeat, and weaker Agents will dissipate completely. The D-Reaper mass-produces a new type of ADR until the model becomes obsolete, each ADR numbered while given a codenames based on their appearance and function. The general design aesthetic of the D-Reaper was that of a "Digital creature", exemplified in such details as the jigsaw-like fringes of the Agents, and the optic fiber/telephone wire construction of the Reaper and Mother D-Reaper. Konaka remarked that he was especially fascinated by details like the wings on ADR-02. Aramaki designed the "D-Reaper Zone" which appeared on Earth. : A spy agent who disguises herself as Jeri, when she suffers with depression, in order to analyze human thoughts. It starts out identical in form to Jeri, lacking the life line of succeeding ADR models, but later transforms into a taller demonic parody of the original. In the end, Jeri-Type was absorbed back into the D-Reaper to serve as Mother D-Reaper's