Chessman, who also used the aliases Corvus, Galen, and 008, (AUDIO: Machines) was a Cybrid. (AUDIO: Keepsake, Machines)
He was one of the crewmembers of the Novamore. (AUDIO: Outsiders) He interrogated Liam Barnaby about the destruction of the Telos hibernation chamber. (AUDIO: Machines) He later commanded the Cybermen at Liam's execution. (AUDIO: Extinction) As "Corvus", he infiltrated a ship of Orion androids during the Orion War. (AUDIO: Keepsake)