William "Jock" Ross

William George "Jock" Ross (born 5 August 1943) is a Scottish-born Australian outlaw biker, best known as the founder and the "Supreme Commander" of the Comanchero Motorcycle Club and for his involvement in the Milperra massacre of 1984. Ross was sentenced to life imprisonment with Judge Roden childing him as one of the men most responsible for the shoot-out at the Viking Tavern.