Trevor (Made of Steel)

From Tardis Wiki, the free Doctor Who reference

Trevor was a former policeman who served as senior night-watchman at the MegaTech Centre in the West End of London in the early 21st century.

Early one morning in 2008, two Cybus Cybermen transported inside the Centre with the aim of stealing the electronics equipment that was contained there. Both Trevor and his assistant, Kevin, attempted to stop the Cybermen, but they were killed for their actions. (NSA: Made of Steel)