The Union Aerospace Corporation was founded by Thomas Kelliher on April 3, 1998. Mad Squirrel Mods wants to re-create the UAC into a company that has the same mannerism and mindset as the Weyland-Yutani Corporation in Aliens, as a company that tries to contain and control the threat for their own bio-weapons division.
In some versions such as the film adaptation from 2005, the UAC is described as a corrupt company with secrets, and that they are not on the same side as the military.
Their technology also seems to differ in each reincarnation. In every reincarnation of DOOM, the UAC would be depicted differently but with similar motives.
Every title belonging to the DOOM series has the UAC portrayed as a government-funded corporation responsible for the demonic mayhem that begins on Mars.
