AEGIS is a secretive United Nations agency, the acronym standing for Alien Exterminating Global Intercept System. The agency appears to have its origins in the ruins of the Capital Defense Plan following World War II with the collapse of the Capital Defense Plans of the major participating nations during the war and the aging design standards of the Koobu armor, combined with a growing threat from extra-dimensional entities, particularly the descending demons and the invaders, it was decided by the United Nations Security Council that there should be an agency dedicated to fighting these threats when and where they were found.
From the late 1950s through the early 1970s, AEGIS employed numerous experts, administrators, and those gifted with high spiritual power. In particular, those with a special ability to open extra-dimensional gates and to use various powers granted through the same. It was organized along the lines of a covert intelligence agency, with all of its agents given carte blanche, and they were literally immune from any and all national laws. At the same time, research was pushing forward on a new form of Koobu. The eventual answer came from a brilliant researcher—tragically killed in a car crash—who invented the spirit engine, which not only powered armor, but actively magnified the spirit powers of the pilot. The engine operated independently of the armor, meaning that it would perform in any vehicle with a user able to channel spirit energy.
But the 1970s also saw the rise of UNIT, the United Nations Intelligence Task-Force, lead by the efforts of Great Britain. They provided a much more palatable and controllable military solution to alien incursions to the Earth, but AEGIS still had a mission. Transforming itself much more into a true intelligence agency, the agents lost some of their carte blanche, and the extermination part of the mission was relegated to the most severe cases—in particular, the invaders, given their hidden nature. The invaders were of such great concern that AEGIS actually provided a bounty on confirmed kills.
The updated spirit armor was too public to use in its mecha form, but a few vehicles were built that made use of the spirit engine and were able to achieve incredibly high speeds. One sports car was clocked at 600kph.
By the dawn of the 21st century, AEGIS had made great strides in the understanding of certain aspects of the enemies they faced regularly. In particular, they discovered that the strange crystals left behind after an invader was destroyed were in actuality the starseed of their victim—all that was left of a person after they were possessed by an invader. They had also managed to create artificial gate generators able to be concealed in a cell phone that allowed even mundane agents to have an emergency backup. AEGIS thought it was ready to face the new century.
Recent events have brought home just how much danger there really was. The battle of Canary Wharf was the event that brought Torchwood to UN attention. Reorganized under a Captain Jack Harkness, the wealth of alien technology under their control was of great concern. However, they have developed a comfortable relationship with UNIT, and seem to be acting as special police unit for alien incidents. This leaves AEGIS' data collection and intelligence functions as their own specialty, and has led to another tightening of the rules for their agents.
AEGIS acts as an information clearing house for data on aliens, as well as employing numerous agents who act as information collection specialists. Agents are empowered to act on their own initiative to prevent immediate threats to life or property, and still receive a standard diplomatic immunity. However, agents are encouraged to call on UNIT or Torchwood if no immediate threat is present, but they have evidence that such a threat may be present in the future. There is a special permanent committee within the UN that provides strategic direction and oversight to the six regional directors: Europe, Africa, Asia, North America, South America, and Australia. Antarctica Oceania and the special director for mid-east affairs. Each of these regional directors have deputy directors on a country by country basis, depending on the size of the country. These deputy directors either act as a commander over a network or have a number of commanders reporting to them, usually on a regional basis. Commanders are usually provided office space and an analysis staff that can be organized according to their preferences. For the most part, the elaborate bases and action teams of the past have been eliminated, but a few still function where there is a high threat level, and UNIT forces are likely to cause more collateral damage than the AEGIS agents.