Dead Man

From Tardis Wiki, the free Doctor Who reference

The Dead Man was the final guardian of Shadow-Space, a dead man's switch that could be used to destroy the entire domain. After the Maschera invaded SORDIDE Delta, the Dead Man's RATs were damaged and he became erratic and unintelligible. He attempted to use the Steamroller Man to trigger himself, but failed. He had no eyes when Nyssa and Simon Valdac saw him. He destroyed Shadow-Space, foiling the Maschera's plot. (AUDIO: Masquerade)