Alfred Pennyworth was the butler to Thomas Wayne and Martha Wayne, and later to their son Bruce, the first Batman. Before entering the Wayne family's service, he was an agent of the British Secret Service.
Alfred was a clerk at the British intelligence. One of his projects was Project Excalibur, a missile defense program of which he had half of the launch codes. After leaving intelligence work, Alfred assumed a life as an ordinary domestic servant. He served Thomas and Martha Wayne since before their son was born, and helped to raise him.
When the Waynes were killed by a mugger, Alfred helped shelter the orphaned Bruce, and assisted him in his training to become a crime fighter. He would continue to do this as well for Dick Grayson, Barbara Gordon and Tim Drake. During his many trials, Bruce came to rely on Alfred as a source of advice and moral support, one of the few men with whom he shared confidences.
Alfred was also an invaluable source of aid in all aspects of Batman's life, from keeping his home in perfect order, to helping him maintain his public facade as Bruce Wayne, and occasionally carrying out espionage and investigation on his behalf. Alfred's secret service past came back to haunt him briefly, when he was forced to leave Bruce's employ without notice to help rescue an old colleague who had been kidnapped by Red Claw.
Alfred passed away sometime before 2019 (when Bruce quit the Batman title), leaving Bruce alone.