Butcher (The Sleeping Blood)
From Tardis Wiki, the free Doctor Who reference
Gomery was medical software specialist who worked for the government on Rua. He later adopted the alias the Butcher out of disgust for the unjust society on Rua. He referred to himself as a biohacker, while others referred to him as a terrorist.
He used medical nanomachines against the populace, and killed prominent public figures. He later encountered Susan who tried to negotiate with him, but Kendrick shot him before the discussion got anywhere, killing him. (AUDIO: The Sleeping Blood)
