The Warlord

The Warlord was a renegade Time Lord who was an adversary of the Doctor. He was obsessed with changing history to extend wars and find alternate outcomes and had been scarred from years of contact with numerous conflicts.

Biography
Originally, the Warlord was a Time Lord who studied warfare in the search for a means to stop it. However, his motivations soon became distorted, and he instead became addicted to war. He began traveling through time to change history in order to lengthen across time and space.

On Sitius V, he accomplished this by giving the cave people fire. On Fomalhaut VII it was "the Internal combustion engine." The Doctor also suspected he was behind the extinction of the Notrethan race.

On the planet Quantain 2743, the Warlord became involved in a war being fought by King Varangar. The Doctor arrived with his human companion, believing Varangar was in trouble. The Doctor was then kidnapped, and his companion had to save him.

Later, the human was able to save the Doctor and the two learned that the Warlord had chosen his next source of conflict; Paris, 1814. There the Warlord planned to subvert the Battle of Waterloo. However, a malfunction in the Doctor's TARDIS caused him to arrive in 1815 instead of 1814, and in Charleroi instead of Paris. This meant that the Warlord had been able to plan his averting of the battle for over a year. As the French Police arrested the Doctor, he was separated from his human companion.

The companion managed to infiltrate a French army base where the Doctor was being kept as a Prisoner of war. There, the human encountered the Warlord, disguised as a French Marshal. The human threw snuff into the Warlord's breathing apparatus, weakening him enough to free the Doctor.

While captive, the Doctor had learned that the Warlord's plan was to kill the Duke of Wellington in Brussels. The Doctor and the human once again split-up on their way to Brussels. On the way, the human met someone in a Union Jack uniform named Kilroy. Kilroy stated he wanted to help defeat the Warlord and gave the human a recharge module for a sonic lance before appearing to vanish.

The human and the Doctor reunited at the Duke of Richmond's residence. There, the pair discovered a secret entrance which led to a chamber where the Warlord waited with an atomic disruptor. The human attacked the Warlord with the sonic lance, cutting his breathing tubes and sending him thriving to the floor. The Doctor and the human were then able to disarm the Warlord's bomb, stopping history from being averted. (NOTVALID: Doctor Who and the Warlord)

Appearance
The Warlord was known to wear disguises to blend into the time periods he visited. Beneath these, he was heavily disfigured. He had a semi-reptilian appearance and three eyes, his face fastened with bio-mechanical tubes which formed a sort of breathing apparatus. Beneath his French marshal disguise in 1815 he wore space armour. He also wore a false beard.

It was said that by the time the Doctor encountered him in 1815, "all the misery and savagery he [had] witnessed and caused for centuries [was] carved on his face and twisted on his limbs." (NOTVALID: Doctor Who and the Warlord)