Josh Caras as Phineas Howe Young, Brigham Young 's son, who leads the Mormon work crew under the influence of Thor Gundersen (7 episodes) Tzi Ma as Tao, head of the Chinese crew for the Central Pacific Railroad (6 episodes) Andrew Howard as Johnny Shea, Mickey 's Irish cousin from New York, who is made railroad foreman (3 episodes) Jennifer Lim as Wai - Ling, Chang 's enslaved wife who works in his brothel (3 episodes) Amber Chardae Robinson as Mary Fields, stagecoach driver (3 episodes) Victor Slezak as President Ulysses S. Grant (3 episodes) Jake Weber as John Allen Campbell, a former Brigadier General for the Union Army, appointed provisional governor of Wyoming by Ulysses S. Grant. Campbell is determined to civilize the West and seize control of the city from railroad mogul Durant. (3 episodes) Gregg Henry as Brigham Young, the leader of the Mormons (2 episodes) Toby Hemingway as Isaac Vinson, a farmhand for the Hatches. In Cullen 's absence, Naomi has fallen in love with him. (2 episodes) Andy Yu as Hoi, a Chinese worker who was the first to give his life for the railroad after Cullen 's decision to switch from traditional gunpowder to nitroglycerin. (2 episodes)
who plays brigham young on hell on wheels
Gregg Henry