Woz is sometimes called "Woz the Whiz." He is the ship's hacker and maintains the ship's software. He and Jobs were originally stowaways aboard the Gekko, but they were invited to stay because of their technical skills. He and Jobs tend to argue over how best to configure the Gekko's systems, since Woz insists on rewriting the control systems to compensate for every modification Jobs makes while Jobs asserts that the software is fully capable of supporting the changes. His hippy attitude and grunge attire are a deep contrast to Jobs, but they seem to maintain a strong friendship anyway. He is modeled after Steve Wozniak (hence, "Woz"), another of Apple's co-founders.
(Taken from Wikipedia)