Lee Sampson (リー・サムソン Rī Samuson?) was a skilled teenage hacker. He became an accomplice to Vincent Volaju, playing an integral role in the plot to release deadly nanomachines on the population of Mars.
Lee Sampson often wore a red vest and a mint green, long-sleeved shirt. He has large, bushy eyebrows, and small square glasses. He also has a broad nose and small ears. A proficient hacker, Sampson treated most things like a game in his life. In fact, he was a big fan of old 20th century games and played arcade games such as one featuring "Sporky Dorky."
He came to know Volaju in 2071, who gave him the opportunity to help be a terrorist. The idea appealed to Sampson, and he helped Volaju hack into systems. Sampson incurred a bounty, and was pursued by Faye Valentine who tracked him via his credit card. The card was used while Volaju drove the truck for his first attack on the city.
In an arcade, Faye held him at gunpoint, however, he quickly was able to distract her by shutting down the electricity. He escaped, leaving behind his hat. Ed and Ein would later track him to an apartment where he and Volaju had been. He went there soonafter, only to be betrayed by Volaju when he set the nano-bots loose on him. He busted out a window, drawing Faye who was nearby. His last sight was of Faye burst into the room. He muttered, "press my...reset button...as well as I didn't see sporky dokey not enough points." 
Lee is very interested in video games from the 20th century (as shown by him playing an alternate version of Pac-Man in a car while talking to Vincent). In an interview with Watanabe, the interviewer referred to Lee Sampson, a character in the film who "unable to distinguish" death in real life and death in a video game; when the interviewer asked Watanabe whether he wanted to "question society's desensitization to violence" with a character who "truly feels the pain of death," Watanabe responded by saying that he did not intend to 'make it a "statement," as such.' Watanabe added that he does not create films to "particular message" and that films "naturally reflect the way we feel at the time."