Simon Devlin was CEO of Devlin Futuretech, a company that manufactured 3D printers. Devlin demonstrated the printers, which worked through the use of liquid polymers, to a party that included Kate Stewart. (AUDIO: Vanguard)
Devlin told Kate he replaced his skull with plastic due to a debilitating disease, and he instructed Jenna Gold to find a Nestene energy unit. (AUDIO: Earthfall)
Devlin thought Jacqui McGee worked for UNIT and ordered her execution. He later kidnapped Kate to convert her into an Auton; instead, Josh Carter suffered this fate. (AUDIO: Bridgehead)
Devlin was particularly curious about the true form of the Nestene Consciousness. [source needed]