<Ul> <Li> Tye Sheridan as Parzival / Wade Watts, a Gunter who wishes to win so he can leave the stacks . </Li> <Li> Olivia Cooke as Art3mis / Samantha Cook, a well - known Gunter who works with various allies to ensure the OASIS is kept free and out of the hands of IOI . </Li> <Li> Ben Mendelsohn as Nolan Sorrento, the CEO of Innovative Online Industries who seeks full control over the OASIS . </Li> <Li> Lena Waithe as Aech / Helen Harris, a Gunter and long - time friend of Wade's who works as a mechanic in the OASIS . </Li> <Li> T.J. Miller as i - R0k, a freelance dealer and mercenary often employed by IOI . </Li> <Li> Simon Pegg as Curator / Ogden Morrow, a co-creator of the OASIS, who eventually left the company . He is concerned about how many people have developed an unhealthy dependency on the game . </Li> <Li> Mark Rylance as Anorak / James Halliday, the deceased co-creator of the OASIS who reveals an Easter Egg hidden in the OASIS after his passing that grants control over the OASIS to its winner . </Li> <Li> Philip Zhao as Sho / Zhou, a Gunter and one of the "High Five". He is 11 years old in reality . </Li> <Li> Win Morisaki as Daito / Toshiro, a Gunter and one of the "High Five". </Li> <Li> Hannah John - Kamen as F'Nale Zandor, IOI's head of operations in the physical world and for their indentured servant programs . </Li> </Ul> <Li> Tye Sheridan as Parzival / Wade Watts, a Gunter who wishes to win so he can leave the stacks . </Li> <Li> Olivia Cooke as Art3mis / Samantha Cook, a well - known Gunter who works with various allies to ensure the OASIS is kept free and out of the hands of IOI . </Li> <Li> Ben Mendelsohn as Nolan Sorrento, the CEO of Innovative Online Industries who seeks full control over the OASIS . </Li>

Who is playing artemis in ready player one