Billy was born to an unknown woman and Eric Grady. Billy spent a lot of time at the West house and started a longtime friendship with Van West and Munter. Billy started to refer to himself as Billy West as he was so good friends with them it was like he was family. He stole diggers with Van when they were teenagers.
Billy was first shown running from a policeman and clutching several unidentifiable stolen goods. Billy dropped the goods and managed to escape by hiding in a garbage bin. Unfortunately for Billy, the bin was then emptied into a disposal truck and Billy was killed instantly. His funeral was held the same week. (The Cause Of This Defect)