Kravos

Kravos was a Kaled officer who worked at the bunker three or four miles from the Kaled Dome towards the end of the Thousand Year War. Davros had created and implanted in him a device that kept his heart beating. When he joined several scientists in objecting to Davros's experiments, Davros had the Daleks exterminate them. (TV: Genesis of the Daleks)

Behind the scenes

 * The character was originally named Fenatin in the script. (INFO: Genesis of the Daleks)