Little is revealed in game of Henderson. He attended college where he got a degree in robotics before getting a job at the H&H Tools Factory. The paranoid owner of the factory, Anthony House, was afraid that Henderson and Robert House were planning to seize the company away from him. Anthony asked Cindy-Lou Kreb to keep an eye on Henderson for him, going as far as to monitor his e-mails to check for suspicious activity.
Henderson's fate is left unknown, however it can be assumed that he was killed when Anthony House initiated the H&H Tools Factory security system, which caused the death of most (if not all) of the employees.