Henry "Mutt" Williams, born Henry Walton Jones III, was the illegitimate son of Marion Ravenwood and Indiana Jones. His stepfather was Colin Williams, who was killed during World War II. In 1957, Mutt accompanied his estranged parents, along with mentor Harold Oxley and George McHale on a quest to return a fabled Crystal Skull to Akator. Following this adventure, during which he proved his fencing skills in a sword-duel with the Soviet Special Forces colonel Irina Spalko, he was present as his mother and father wed after years of separation.