Dalek X

Dalek X, also known as the Dalek Inquisitor General, was one of the most sacred and feared Daleks before the Last Great Time War. He was described as having a gunmetal black casing with gold vertical slats and sensedomes.

Biography
Dalek X's name was famous across the universe. It was not his real name. He adopted it, understanding it evoked fear in humans. It was every bounty hunter's dream to defeat him, but also every bounty hunter's fear to encounter him. He was often called "the Devil in Dalek form". He commanded the first Exterminator-class Dalek vessel, the Exterminator, and had a squad of assault Daleks equipped with laser-cutting claws in place of manipulator arms. He had at least two elite guards, armed with double gunsticks. It answered only to the Supreme Dalek.

Dalek X lasted until the end of the Second Dalek War when he encountered the Tenth Doctor. After enslaving the Doctor and a team of bounty hunters, he thought himself victorious over the Time Lord. He tortured the Doctor in many ways, simply to see how much pain he could endure. In the end, his methods proved unsuccessful; the Doctor resisted them all. The Doctor offered him the TARDIS. He left with the Doctor and the surviving bounty hunters to the planet Hurala and the abandonded Lodestar refuelling station. In a rage, one of the bounty hunters fought the Daleks and was killed in the process, although the Doctor escaped with the others and detonated the station, destroying the Daleks and the Exterminator.

Dalek X was thought dead, although later the Doctor recognised his radio waves broadcasting across the universe for help, and homed in on him. The Doctor finished what he had started, leaving Dalek X to suffer forever in the darkness, living off life support systems, never able to get help because the planet's systems stopped other Daleks from receiving the signal. He did, however, promise to come back and get his revenge on the Doctor, who promised to be waiting for him. (NSA: Prisoner of the Daleks)

Dalek Inquisitor General