Cole Jarnish

Cole Jarnish was a pilot and companion to the Master.

Meeting the Master
Cole was piloting a ship coming down to Arcking, when the Daleks, in search of the Master, attacked the ship, killing most people on board apart from him and a small number of others. He was placed in medical care, where he met the Master, pretending to be a Doctor.

When the Master asked for a pilot, so he could use a landship to search for an energy source, which was rumoured to be why Arcking had such mysterious properties, he requested Cole as pilot, alongside Phila as companion. Upon finding the source, they found that it was sentient. After leaving it, due to it talking to them and refusing to go, their landship was attacked by Daleks, and they were forced to leave it. Phila was killed, and Cole left Arcking with the Master, in his TARDIS. (AUDIO: The Good Master)

Companion to the Master
Cole requested to land on a planet, which was in need of saving, so he could be its saviour. The Master left him at a village, so he could go grow grapes, and Cole was put to work by the villagers. He discovered that the villagers were dying, due to fallout of the Time War, so he created a suit which would keep them alive. He managed to get all of the villagers into a suit, but the suits turned them into robotic like creatures, only in need of revenge. They chased him out of the village and he escaped to the Master, after which, they left the planet. (AUDIO: The Sky Man)

The Master took Cole to No.24 Marigold Lane, Stanford Bridge, Earth where a Time Lord was keeping the Heavenly Paradigm under lock and key. After finding this Time Lord, the Master killed Cole, his usefulness having been expanded. (AUDIO: The Heavenly Paradigm)