"Alcatraz" is the protagonist in Crysis 2 and the novel Crysis: Legion, which contains additional personal background about him. He is a Force Recon Marine originally sent to New York City to (unknowingly) combat the Ceph, before receiving the Crynet Nanosuit 2.0 from Prophet, and ultimately becomes a "reincarnation" of Laurence Barnes, as shown in Crysis 3, having merged with the original's personality and consciousness being stored within the nanosuit.