- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Starfleet officer and Daystrom Institute of Technology's Chair of Robotics. His desire to dismantle Data prompted the 2365 adjudication of Data as a sentient life-form. Maddox exchanged correspondence with Data afterwards.