Anthony Hopkins as Dr. Robert Ford, the brilliant creative director of Westworld.
James Marsden as Teddy Flood, a newly arrived gunslinger in pursuit of a local beauty.
Evan Rachel Wood as Dolores Abernathy, a Western girl who discovers her entire life is an elaborately constructed lie.
Jeffrey Wright as Bernard Lowe, head of the Westworld Programming Division and creator of artificial people.
Thandie Newton as Maeve Millay, the beautiful and sharp madame of Westworld.
Sidse Babett Knudsen as Theresa Cullen, Westworld’s terse operations leader, responsible for keeping the park from sliding into unscripted chaos.
Rodrigo Santoro as Harlan Bell, a wanted man bent on survival.
Ed Harris as the Man in Black, a mysterious villain.
Shannon Woodward as Elsie King, a rising star in the Programming Division tasked with odd behavior in the park's artificial beings.
Ingrid Bolsø Berdal as Armistice, a brutal and ruthless bandit.
Angela Sarafyan as Clementine Pennyfeather, an artificial being and one of Westworld's most popular attractions.
Simon Quarterman as Lee Sizemore, Westworld's narrative director, whose artistic temperament aggravates his co-workers.
Ben Barnes as Logan, a louche bachelor and veteran Westworld guest. His hedonistic romp through Westworld is equally motivated by self-indulgence and a desire to help his friend, William.
Jimmi Simpson as William, a reluctant first time visitor to Westworld, joining his friend, Logan. Initially dismissive of the park’s more lascivious attractions, he slowly uncovers a deeper meaning to the park’s narrative.
Clifton Collins Jr. as Lawrence, a charming but lethal outlaw, with a knack for maneuvering and negotiating the various criminal elements of Westworld.