Hypnos's original purpose was to monitor the electronic communications of half the Earth as a SIGINT system for the Japanese government. Because of the legal issues of violating privacy, Hypnos was kept secret from the public just as it's real life counterpart project ECHELON. However, Hypnos discovered Digimon (termed "Wild Ones") who entered the real world. As a result, the agency's new objective is to detect Digimon when they Bio-Emerge in the real world and to prevent it if possible. If a Digimon does manage to cross over, Hypnos would try to capture the Wild One and study it. Another function of the agency is to prevent media leaks about Digimon, as well as cover up incidents (such as creating cover stories) that involve Digimon. Apparently Mitsuo Yamaki, the head of Hypnos, had an agenda to exterminate Digimon once and for all.
However, their efforts at first prove unsuccessful. As time went on, they develop new and better methods of attacking Digimon, but these techniques are ineffective against the Deva. In their efforts to better understand and defeat the Digimon, Hypnos recruits the computer programmers who originally made the Digimon, the Monster Makers, and attempts to use their knowledge to create a successful anti-Digimon weapon.
After the Tamers enter the Digital World, Hypnos's objectives change: they now seek only to bring the kids home. This new realization comes after Yamaki (proven to be only capable manager of Hypnos' systems) realizes that the Tamers need help and that Hypnos thus could be useful. Although at first sucessful in its endeavour, it's mainframe is significantly damaged by the D-Reaper, which could only be solved by a destributed system. Eventually, their efforts allow the children and their Digimon to return to the Real World. However, the D-Reaper soon invades the Hypnos building, forcing the evacuation of technicians and stored memory banks. Hypnos is then progressively relocated futher as the D-Reaper expands, but manages to maintain structure and activity.
Hypnos is covertly headquartered in the Tokyo Metropolitan Government Building, which also houses the Hypnos computer system, as well as several labs for research. The agency employs scientists, operators, and computer programmers, as well as several field agents. Also at Hypnos's disposal are unmarked black vans and helicopters, used for investigation and combating Digimon. Since Hypnos is a government agency, Yamaki reports to four officials, presumably his superiors in the Japanese government, and to the Chief Cabinet Secretary, who is voiced by Dave Mallow in the US dub.
In the aftermath of the D-Reaper incident, Hypnos is exposed to the world, and changes its procedures on how to deal with Wild One appearances. One such case is Locomon, whose constant driving around the city causes a massive digital field. Yamaki takes over command of the train office to attempt to redirect Locomon to the digital field and send him home. However, it is revealed that Parasimon is controlling Locomon so he could summon an infinite number of Parasimon to Earth. Luckily, the Tamers are able to stop him and avert the crisis, but not without help from Hypnos.
Mitsuo Yamaki and HypnosEdit
During their attempts to destroy Digimon, who are composed of data, Hypnos develops two programs meant to serve that purpose. Yuggoth and Shaggai are references to the Cthulhu Mythos, while Juggernaut invokes the raw and indiscriminate power of its namesake.
Essentially a blast of virtual energy, the Yuggoth program locks onto and strikes Digimon, supposedly deleting them. But, in some cases, the Digimon who is bio-emerging is able to withstand and disable Yuggoth temporarily. The Yuggoth program is later downloaded into Gallantmon's vehicle Grani.
The Juggernaut program, Shaggai in Japanese, is most powerful of Hypnos' weapons. It is a digital vortex that draws in all data nearby, including Digimon. The program nearly succeeds in destroying many Digimon but inadvertently allows the Deva Mihiramon to pass into the human world. Juggernaut is subsequently upgraded and although at first it was rather unstable, by the end of the deva arc it was invulnerable to attacks from the digital world (due to the Ice Wall the Monster Makers designed). However, it was shut down by an attack from Makuramon, since it came from the human world. In it's final incarnation it is downloaded into Terriermon. As MegaGargomon, he and his partner Henry Wong use it as part of Operation Doodlebug. It regresses the D-Reaper back to its original harmless state by reversing the flow of the D-Reaper's vortex to create a reverse time effect and causing "a miniature big bang" in Yamaki's words, in the D-Reaper's quantum bubble, which causes the D-Reaper to get sucked in and reverted by the reverse time flow.
A transport program created by Hypnos with the Monster Makers' help, the Ark's purpose is to bring the Tamers home from the Digital World. However, the program evolves beyond its original purpose and develops intelligence. Later, when the Tamers and their Digimon are locked in battle with the D-Reaper, Hypnos recovers and modifies the Ark into an attack vehicle, and attempts to materialize it in the human world. However, it is unsuccessful until Gallantmon channels his energy into it, creating Grani.
- Mitsuo Yamaki (山木 満雄 Yamaki Mitsuo?)—Head of Hypnos. While his sinister, black-suited exterior seems to present Mitsuo Yamaki as little more than a basic man in black, his shades hide the mind of an electronics genius. He is responsible for designing the Hypnos system, which keeps a constant watch over the Earth's electronic communications network and secretly monitors and records information, and acts as section chief to the organization named for his creation. Defeated in his plans by the very forces and tools which he used in his mission to rid the human world of the Digimon, he is first depicted as a troubled villain and afterward becomes a valuable ally of the Tamers in their efforts to save both the Digital and Human Worlds from the D-Reaper. He is voiced by Susumu Chiba in Japan and Steven Blum in English.
- Riley Ootori (鳳 麗花 Ootori Reika?)—Chief System Operator of Hypnos. She is also the love interest of her manager, Mitsuo Yamaki. She and Tally are perpetually on-hand to announce the frequent Bio-Emergence of various Wild Ones into the real world, including Guilmon. She is voiced by Tifanie Christun in English during the series and Philece Sampler in Runaway Locomon.
- Tally Onodera (小野寺 恵 Onodera Megumi?)—One of the Hypnos system operators, Tally Onodera is friends with her fellow employee, Riley. Generally quite quiet, but nonetheless highly intelligent and technologically proficient as well as an important part of the Hypnos machine, Tally isn't as committed to Yamaki's ideals as Riley is. Voiced by Peggy O'Neal (US).
- Monster Makers—Group of computer programmers/scientists who created the Digimon and planned the operation Doodlebug. They are reunited by Yamaki and Hypnos in order to learn more about Digimon, so that they could destroy them.
- Gorou Mizuno (水野 悟郎 Mizuno Gorō?)—Nickname "Shibumi". He continued on with the Digimon project after it was shut down in 1986. During the fight with the Deva, he is seen projecting his soul in the Real World, and is identified there as a blond-haired man who wears a yellow jacket and a low-fitting baseball cap. Later he's also seen projecting his soul into the Digital World when the Tamers and their partners are searching in the Digital World for Calumon, and when the Digimon Sovereigns are explaining the current threat to them. He finally appears in his actual bodily form during the Real World's fight against the D-Reaper and reunites with the rest of the Monster Makers. He is voiced by Bob Glouberman in English.
- Janyu Wong (李 鎮宇 Lǐ Zhēnyǔ?): Nickname "Tao", Henry and Suzie Wong's father. In his youth, as a student at Palo Alto University, Janyu joins Rob McCoy's the group of other students that named themselves the Monster Makers in an experiment to create artificial life. The group's experiment resulted in success when they created what would become Digimon, but abruptly was cut short when their funding was pulled, and the experiment frozen. Unbeknown to them, however, their digital creations accidentally found their way into the Digital World, a parallel reality created by Earth's interlinked electronics network, where they continued to grow and evolve. He is voiced by Jamieson Price in English.
- Rob McCoy: Nickname "Dolphin", Alice's grandfather. He was a professor at Palo Alto University in California, and is the leader of the Monster Makers who created the Digimon prototypes in a secretly-funded college project from 1984 to 1986. He is also the brains behind the reunited Monster Makers' projects, including the Ark, which he refers to as his "baby". He is voiced by Tom Fahn in English.
- Aishwarya Rai: Nickname "Curly". She is a professor at Miscatonic University and is reunited by Yamaki and Hypnos with the other Monster Makers. She is voiced by Dorothy Elias-Fahn in English.
- Babel: Real name unknown. He is reunited with the other Monster Makers twenty years later. He is voiced by Neil Kaplan in English.
- Daisy: Real or full name unknown. She is reunited with the other Monter Makers twenty years later. She is voiced by Wendee Lee in English.
- Johnny Beckenstein: An American ally of the Monster Makers that inform them that a handful of the probes were still functional, and relaying information that allowed them to deduce that the D-Reaper was a quantum bubble. It's not known how they know him, but he too is a technical wizard.
- Fake Shibumi: An Mokumon form Shibumi sent to earth by him to do some jobs. Among these jobs is one to pass a Blue Card to the Tamers.
- Man In Black: Unnamed Hypnos agent and field operative that is seen several times in the series. He is voiced by R. Martin Klein.
- Chief Cabinet Secretary: Member of the government body that sanctioned Hypnos, and the one chief of staff most involved with its running.
- The unspoken irony of Yamaki's situation is that it is possible that the Hypnos system actually created a window, a weak spot, between the Real World and the Digital World, allowing Digimon through in the first place. The series bible sees Chiaki Konaka toy around with this idea but it's never fully confirmed as being truth in the finished series – though at one point, Yamaki does wonder if it could be the case.
|Main characters:||Takato Matsuki | Henry Wong | Rika Nonaka | Ryo Akiyama | Jeri Katou | Kazu Shioda | Kenta Kitagawa | Suzie Wong | Ai and Mako|
|Digimon:||Guilmon and Grani | Terriermon | Renamon | Cyberdramon | Leomon | Guardromon | MarineAngemon | Lopmon | Impmon and Behemoth | Calumon|
|Allies:||Omnimon | Mitsuo Yamaki | Monster Makers | Digimon Sovereigns | DigiGnomes | Alice McCoy and Dobermon | Minami Uehara and Seasarmon | Takehito Uehara|
|Villains:||Millenniummon | Hypnos| Monster Makers | Deva | Mephistomon | D-Reaper | Locomon and Parasimon|
|Relationships:||Takato Matsuki | Henry Wong | Rika Nonaka | Jeri Katou | Ryo Akiyama | Kazu Shioda | Kenta Kitagawa | Suzie Wong|
|Other media:||Battle of Adventurers | Runaway Locomon | Digimon Tamers 1984 | Message in the Packet | Brave Tamer|
|See also:||Digimon | Digital World | D-Power | Digi-Modify | Digital field | List of episodes|