Tyler Mercer

Lieutenant Tyler Mercer (PROSE: Resurrection of the Daleks) was a crewmember of the Prison Station on which Davros was held as a prisoner.

Biography
Mercer was one of the few initial survivors of the Dalek raid on the station.

He led the attempt to activate the station's self-destruct mechanism, but failed. Mercer was later shot and killed by one of Lytton's mercenaries. (TV: Resurrection of the Daleks)