Steven Strait plays James Holden, Cas Anvar plays Alex Kamal, and Dominique Tipper plays Naomi Nagata in The Expanse, a sci‑fi series based on the novels by James S.A. Corey.
Main cast
- James HoldenSteven Strait1–6Main
- Naomi NagataDominique Tipper1–6Main
- Alex KamalCas Anvar1–5Main
- Amos BurtonWes Chatham1–6Main
- Chrisjen AvasaralaShohreh Aghdashloo1–6Main
- Draper / Bobbie DraperFrankie Adams2–6Main
- Camina DrummerCara Gee2–6Main
- Josephus MillerThomas Jane1–2 (recurring later)Main
Supporting cast
- Fred JohnsonChad L. Coleman1–4Supp
- Anderson DawesJared Harris1–2Supp
- Sadavir ErrinwrightShawn Doyle1–3Supp
- Cotyar GhaziNick E. Tarabay2–3Supp
- Anna VolovodovElizabeth Mitchell3–4Supp
Guest & voice
- Jules‑Pierre MaoFrançois Chau1–2Guest
- Klaes AshfordDavid Strathairn3–4Guest
- Marco InarosKeon Alexander5–6Guest
- Filip InarosJasai Chase Owens5–6Guest
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About this cast
The Expanse is a critically acclaimed science‑fiction television series that aired from 2015 to 2022, adapting the novels by James S.A. Corey. The central cast features Steven Strait as James Holden, the captain of the Rocinante, alongside Cas Anvar as pilot Alex Kamal and Dominique Tipper as engineer Naomi Nagata. The show explores political tensions between Earth, Mars, and the Belt as…
FAQs
Who plays James Holden in The Expanse?
James Holden is played by Steven Strait.
Who plays Chrisjen Avasarala in The Expanse?
Chrisjen Avasarala is played by Shohreh Aghdashloo.
Who plays Amos Burton in The Expanse?
Amos Burton is played by Wes Chatham.
Who is the main villain in The Expanse?
The series features several antagonists, but primary villains include Jules‑Pierre Mao (François Chau), Marco Inaros (Keon Alexander), and the protomolecule threat.
How many seasons of The Expanse are there?
The Expanse ran for six seasons between 2015 and 2022.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026