Colonel Augustus Autumn is the main antagonist of Fallout 3. He is the Enclave's military commander, who is also the son of a high-ranking Enclave scientist who worked at the Oil Rig from Fallout 2. Autumn is the right-hand man of John Henry Eden, and is also the only one who knows the truth about Eden. Autumn is extremely ruthless, not hesitating to kill any who oppose him. He is also highly intelligent, knowing exactly when to ambush his enemies and how to defeat an opponent. He also seems to be using Eden as a puppet ruler, while he has full command of the Enclave.