Cerberus is a well funded and capable human-survivalist paramilitary group led by the enigmatic Illusive Man.
Cerberus’ core belief is that humans deserve a greater role in the galactic community, and that the Systems Alliance is too hamstrung by law and public opinion to stand up effectively to the Citadel races. Any methods of advancing humanity’s ascension are justified, including illegal or dangerous experimentation, terrorist activities, sabotage and assassination. Cerberus operatives accept that these methods are brutal, but believe history will vindicate them. Nevertheless, both the Systems Alliance and the Citadel Council have declared Cerberus to be a terrorist organization and will prosecute identified Cerberus agents accordingly.
Cerberus is divided into numerous independent cells which often have no knowledge of their counterparts. This ensures that should one cell be compromised, the others would not be captured. Each cell is led by an operative who reports directly to the Illusive Man. Cerberus operates many kinds of cells, ranging from military to political to scientific, but all united under the common goal of advancing humanity.