William "Bill" Anderson was a lieutenant of John Connor during the Future War and the brother of Elizabeth Anderson.
History[]
On July 24, 2004 in Rise of the Machines timeline, a T-X was sent back to kill John Connor's lieutenants in a total of 23 people on the list because killing John Connor was impossible: He was living off the grid at this time and could not be located. It gunned down both William and his sister, Elizabeth, in their house during what appeared to be a party that wasn't authorized by their parents. When William answered the door, thinking it might his mother returning home early, the T-X first identified him and shoved him to the floor, shooting him several times. Terminator 3: Rise of the Machines