In 2016 , Simpson starred with James Purefoy on the first season of SundanceTV 's '' Hap and Leonard '' . That same year , he appeared in a principal role on the first season of HBO 's '' Westworld '' . His portrayal of William — a visitor to Westworld ; a futuristic Wild West-themed amusement park populated by androids — was described as " spellbinding " by Variety . For his work on '' Westworld '' , Simpson was once again nominated for the Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series . The following year , it was announced that Simpson would return for the show 's second season . For his performance in the second season , he received a nomination at the 70th Primetime Emmy Awards for Outstanding Guest Actor in a Drama Series
70th Primetime Emmy Awards
70th Primetime Emmy Awards
Jimmi Simpson