Luther (The Body Electric)

 was a shift manager on a base on Quartz Wastes, on the planet Asmoray, which specialised in extracting electricity emitted from the native quartz.

When the sentinent electrons were attacking and killing the people in the base, Luther did nothing to help - and instead told everyone to get back to work, promising compensation to any survivors. When the Twelfth Doctor decided to investigate the matter himself, he attempted to stop him by accusing him of tresspassing.

When Clara and the Doctor were stopping the sentitent electrons, Luther warned him to stop, and that if they turn off the electric extraction they'd all die - however they ignored his warnings and they all survived. (COMIC: The Body Electric).