HBO sci-fi drama Westworld season 4 sees the core cast return while adding an array of new characters. Since its inception in 2016, Westworld has featured a star-studded lineup of actors in its mysterious futuristic narrative from Tessa Thompson to Ed Harris. The majority of Westworld's main characters from season 1 promise to remain at the heart of the story in the HBO series' fourth season, while the impact of Westworld's newly-introduced personas remains to be seen.
Beginning in the year 2052, Westworld's intriguing story centers on an American West-themed park designed for adults to explore and indulge their every desire. The park's main attraction lies in its "hosts," who are incredibly lifelike robots meant to interact with Westworld's visitors as if they were humans as well. Westworld's first three seasons primarily focused on the relationship between artificial AI and human consciousness, while detailing different levels of human-led organizations in charge of managing the hosts.
Westworld season 4's story takes viewers back to where it all began while introducing new mysteries in the modern world. The series promises its characteristic twists and thrills as it continues its compelling character arcs. These are all of Westworld season 4's new and returning characters and the actors who play them.
Evan Rachel Wood as Christina
Over Westworld's first three seasons, Evan Rachel Wood played Dolores Abernathy, one of the theme park's hosts and arguably the HBO show's central figure. Dolores shifted Westworld's narrative by orchestrating a host uprising against humans in both the fictional park in season 2 and the real-world city of Los Angeles in season 3. Dolores' death at the end of Westworld season 3 induced speculation about Wood's future on the show, however, the character's physical form has been repurposed into a new character named Christina. Outside of Westworld, Wood's prominent appearances include the 2003 film Thirteen, 2007's Across the Universe, and 2019's Frozen II. Wood's upcoming slate will see her play Madonna in Weird: The Al Yankovic Story.
Thandiwe Newton as Maeve Millay
Thandiwe Newton returns in Westworld season 4 as Maeve Millay, the character she played in each of the show's first three runs. A sentient host, Maeve began Westworld as the boss of the park's brothel and become one of the first hosts to develop self-awareness. She has spent most of Westworld searching for her lost daughter and working against Dolores' plans for a host revolution. Newton has a number of films under her belt in addition to her TV roles. She recently appeared in All the Old Knives and Reminiscence. Other prominent movies on her resume include Mission: Impossible II and Solo: A Star Wars Story.
Jeffrey Wright as Bernard Lowe
Jeffrey Wright's Bernard Lowe remains a pivotal character in Westworld season 4. Introduced in season 1 as one of the human minds behind Robert Ford's theme park, Bernard was later revealed to be a host. Wright recently appeared as Lt. James Gordon in The Batman and previously played the role of Beetee in The Hunger Games: Catching Fire, Mockingjay: Part I, and Mockingjay: Part II.
Tessa Thompson as Charlotte Hale/Dolores Abernathy
Tessa Thompson reprises her role in Westworld season 4 after appearing in each previous run. Originally a human by the name of Charlotte Hale, Thompson's character was killed and subsequently replaced by a host version of her physical form implanted with the consciousness of Dolores. Thompson is best known for her Marvel Cinematic Universe appearances as the Asgardian warrior Valkyrie in Thor: Ragnarok, Avengers: Endgame, and the forthcoming Thor: Love and Thunder. Elsewhere, Thompson's acting resume includes 2021's Passing, 2018's Annihilation, and 2015's Creed.
Aaron Paul as Caleb Nichols
Aaron Paul's Caleb Nichols was introduced in Westworld season 3 as a mundane construction worker and military veteran with a troubled past. He collaborated with Dolores to destroy Engerraund Serac's Rehoboam computer. Most TV enthusiasts know Paul from Breaking Bad, in which the actor played Jesse Pinkman for all five seasons. Paul's other noteworthy projects include BoJack Horseman and Need for Speed.
Ed Harris as William/The Man In Black
One of the show's main characters since the beginning, Ed Harris' Man In Black returns in Westworld season 4 under intriguing circumstances following his apparent death at the end of season 3 and the revelation of a host bearing his appearance. Westworld's Man In Black is the older version of William, who was played by Jimmi Simpson in scenes later revealed as flashbacks. Harris' array of renowned performances includes his roles in Apollo 13, Pollock, and The Truman Show.
Luke Hemsworth as Ashley Stubbs
Luke Hemsworth returns to Westworld as Ashley Stubbs, who, like Bernard, initially posed as a human before his synthetic status came to light. Formerly the Westworld theme park's head of security, Stubbs has accompanied Bernard through the show's storyline and appeared to die at the hands of William in season 3's finale. However, it can be concluded that Stubbs' injuries were not fatal. The brother of fellow actors Chris and Liam Hemsworth, Luke played an actor of the God of Thunder in Thor: The Dark World, Ragnarok, and will reappear in Love and Thunder.
Angela Sarafyan as Clementine Pennyfeather
Clementine Pennyfeather appeared in Westworld season 1 as one of the host sex workers at the theme park's brothel alongside Maeve. Angela Saryfyan's character has since escaped Westworld and was discovered to possess the ability to communicate orders to other hosts using her mind. Clementine's death in season 2 didn't stop her from reappearing in Westworld season 3, as her synthetic physique was reconstructed. Saryfyan has notably appeared in The Immigrant, Paranoia, and The Twilight Saga: Breaking Dawn - Part 2.
Westworld Season 4 Supporting Cast & Characters
James Marsden as Teddy Flood - James Marsden returns in Westworld season 4 following his absence from season 3. Teddy, a host, was Dolores' lover during Westworld seasons 1 and 2, though met his demise in the series' sophomore outing. The logistics of Teddy's revival are unknown, though Westworld's habit of resurrecting the dead makes Marsden's involvement in season 4 unsurprising. The actor is best known for his roles as Corny Collins in 2007's Hairspray, Cyclops in 2000's X-Men, and Prince Edward in 2007's Enchanted. Marsden will play Prince Edward again in Disenchanted.
Ariana DeBose as Maya - 2022 Academy-Award-winner Ariana DeBose features in Westworld season 4 as Maya, Christina's roommate. DeBose recently won the Best Supporting Actress Oscar for her performance as Anita in Steven Spielberg's West Side Story. DeBose is slated to portray Calypso in Marvel's Kraven the Hunter, which will release in January 2023.
Actors Aurora Perrineau, Daniel Wu, and Arturo Del Puerto have additionally been confirmed as new cast members in Westworld season 4, however, details on their characters have been kept under wraps. Perrineau notably appeared in Prodigal Son seasons 1 and 2. Wu's featured in 2018's Tomb Raider and 2021's Reminiscence. Del Puerto currently holds a supporting role in Apple TV+'s For All Mankind.
Westworld season 4 premieres Sunday, June 26 on HBO Max and releases new episodes weekly.