While NEXUS refers to a faction, the term "NEXUS" is used interchangeably with the NEXUS Intruder Program.
NEXUS it the most strong and high tech faction of all. They control The Collective and The New Paradigm. The collective for searching for nuclear energy and The New Paradigm for making a base in the Western sector and recovering artifacts from before The Collapse.
nexus uses a commentary voice when issuing commands, eg. sub1_4bn, and a more chatty voice for the intruder program
Destroy the world with nuclear fire to clear the way for my cybernetic future and further shape the world in to my own image by surgically removing unwanted growths like you. — Dr. Alan Reed