1Evan Rachel Wood (Dolores Abernathy)
HBOWood ditches Dolores's blue prairie duds for a sleek modern look in the real world. After escaping the park at the end of Season 2, the host is "on a rampage" in new, human territory, the actress teased.
2Jeffrey Wright (Bernard Lowe)
HBOAfter undergoing an existential crisis last season, Bernard is back and suspendered up on a meat farm. "Season 3 in some ways is about exploring a new park. And that's the world outside of Westworld. So in some ways those characters, the hosts, become guests," Wright said of the new chapter.
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3Tessa Thompson (Charlotte Hale)
HBOThe Men in Black: International and Thor: Ragnarok star returns as Delos executive Charlotte Hale—or at least, a clone of her. At the end of Season 2, we find out that the real Charlotte was killed and replicated, and her clone was installed with Dolores's consciousness, which is how the latter successfully flees the park.
4Thandie Newton (Maeve Millay)
HBOEmmy winner Thandie Newton reprises her role as the powerful Maeve, and she appears to be in another theme park, this one inspired by a Nazi-occupied Italian city. It doesn't seem like she stays there forever, though, as further trailers reveal she's tasked with a mission to stop Dolores.
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5Aaron Paul (Caleb)
HBOThe Breaking Bad alum is a new, human (we think?) addition to the crew. His Caleb is a construction worker who's "trying to survive in this chaotic world," Paul revealed.
6Lena Waithe (Ash)
HBOThe actress and screenwriter—whose credits include Master of None, The Chi, and Queen & Slim—joins as Ash, one of Caleb's associates.
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7Marshawn Lynch (Giggles)
HBOThe Seattle Seahawks running back enters as the incredibly named Giggles, a member of Ash and Caleb's circle.
8John Gallagher Jr. (Liam Dempsey Jr.)
HBOJohn Gallagher Jr.—from HBO's The Newsroom and Amazon's Modern Love—is Liam, CEO of the AI tech company Incite. His father founded the corporation.
9Tommy Flanagan (Martin Connells)
HBOSons of Anarchy and Gladiator star Tommy Flanagan is Connells, a higher-up at Incite and close associate of Liam's.
10Vincent Cassel (Engerraund Serac)
HBOThe French actor was cast in a mysterious villain role, but clips and promos have slowly disclosed details about his character, Serac. In the trailer, he recruits Maeve to find Dolores "and kill her."
In the Season 3 premiere, we learn he's one of the original founders of Incite and the one true keeper of its secrets. He's also the architect of the company's system, Rehoboam.
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11Ed Harris (Man in Black, a.k.a. William)
HBOAfter a very confusing Season 2 ending, the Man in Black is back, and looking very disheveled. When we last saw the park investor and repeat guest, he was questioning his reality after accidentally killing his daughter in the Westworld park.
12Luke Hemsworth (Ashley Stubbs)
HBOLuke Hemsworth (yes, Liam and Chris's brother) continues as Stubbs, the Westworld security chief who left us questioning whether he, too, is a host in the Season 2 finale. In Season 3, Episode 2, he confirms to Bernard that he is indeed a robot.
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13Rodrigo Santoro (Hector Escaton)
HBOIt appears Maeve has a friend in War World. Hector, her love interest and Westworld's most wanted, makes a cameo kissing his partner host in the Comic-Con trailer for the third season. In Episode 2, he does reunite with Maeve, but seems to be programmed to forget her.
14Scott Mescudi, a.k.a. Kid Cudi (Francis)
HBORapper Kid Cudi is also in tow; he plays Francis, an old friend of Caleb's. Mescudi isn't new to the screen after appearing in projects like Need for Speed and Creepshow. He'll also appear in Bill & Ted Face the Music later this year.
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15Simon Quarterman (Lee Sizemore)
HBOBritish actor Simon Quarterman returns as a host/clone version of Delos's head of narrative, Lee Sizemore. The real Lee was killed in a shoot-out at the end of Season 2, but this version exists in a simulation of Delos's facilities where Maeve exists in Season 3, Episode 2.
16Michael Ealy (Jake)
HBOThe Stumptown actor gets introduced in Episode 3 as Charlotte's ex-husband and the father of their young child, Nathan.
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17Hiroyuki Sanada (Musashi)
HBOMusashi entered the Westworld universe in Season 2 as a host in Shogunworld, but he returns with a total bombshell reveal in Season 3. Maeve encounters him on her quest to find Dolores, but she realizes he's programmed with someone else's control unit ...
18Katja Herbers (Emily)
HBODespite the major plot twist in Season 2, Herbers resumes her role as Emily, the Man in Black's daughter, in Season 3 as a figment of her father's imagination.
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19Pom Klementieff (Martel)
J. Merritt//Getty ImagesMarvel fans may know Klementieff as Mantis from Guardians of the Galaxy, but in the Westworld universe, she plays Martel, someone who works for Serac.
20Peter Mullan (James Delos)
HBOThe founder of Delos and father-in-law to William/The Man in Black, James Delos briefly returns as part of his son-in-law's hallucination.
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