| ||For Harkness, the Rivet City security chief, see Harkness.|
Harkness was a man alive before the Great War.
He was a veteran in the United States Armed Forces, taking part in an unknown conflict. His wife divorced him at an unknown point in time. His memory was installed onto a memory chip, and two centuries later, his memories were installed onto an android named A3-21.
Harkness is mentioned only in Fallout 3.