Project Hail Mary (2026) Cast & Character Guide — No Spoilers | Who's That?

Who plays who in Project Hail Mary (2026)? Browse a spoiler-free character guide with photos of every major character and the actors behind them, including Ryan Gosling, Sandra Hüller, James Ortiz.

• Ryland Grace — played by Ryan Gosling
• Eva Stratt — played by Sandra Hüller
• Rocky (voice) — played by James Ortiz
• Carl — played by Lionel Boyce
• Olesya Ilyukhina — played by Milana Vayntrub
• Yao — played by Ken Leung
• Mary (voice) — played by Priya Kansara
• Dr. Browne — played by Mia Soteriou
• Olivia — played by Annelle Olaleye
• Rekha — played by Maya Eva Hosein
• Parker — played by Bastian Antonio Fuentes
• Hardware Store Cashier — played by Alice Brittain
• Air Force Officer — played by Michael Akinsulire
• Tilt-A-Whirl — played by Travis Jay
• Aircraft Carrier Officer — played by Geoffrey Lumb
• Dr. Scyther — played by Paul Lambert
• Dr. Li — played by Orion Lee
• Narender — played by Aaron Neil
• Chimamanda — played by Michelle Greenidge
• Voigt — played by Bernhard Schütz