OSI

After the CIA was formed to unify American intelligence efforts, the predecessor agency OSI went 'black' and was charged with controlling all aspects of alien activity in the United States. Unlike the other intelligence agencies, it had good cooperation with enemy states' agencies that had simliar missions. The lack of oversight, black budget, and access to captured alien technology made OSI's menacing 'Men in Black' the boogiemen of conspiracy theorists and alien visitors for several decades. Any 'superhuman' that dared hint publicly as to an alien origin disappeared quietly and completely. They never appeared to have made a distinction between hero or villain. Anything offering proof of extra terrestrial life was a threat to disrupt human society.

All this changed with formal alien contact with the Guild, the creation of the United Earth and Starguard. OSI (and similar foreign agencies) were briefly revealled, and 'officially' disbanded. Rumor has it that some countries maintained their anti-alien agencies, particularly those most hesitant about surrendering even a smidgen of sovereignity to the UE. Papers made public during OSI's brief moment in the light showed that it was partially responsible for Area 51, and the Roswell coverup was one of its first missions.

At the height of its power, in the late 1990s, OSI must have been incredibly powerful. When Tyrok 'the Conqueror' tried to seize control of Washington DC in 1994, he smashed aside several superteams before he made the fatal mistake of claiming to be an alien on national TV. The next day he was simply gone. If OSI is still active, there is no way of knowing if it is less or more powerful, or if it still has US government support. It is thought that many OSI agents, disillusioned by the end of their crusade and the rise of Starguard were instrumental in forming ACE, the Allied Champions of Earth.