The Master (The Fallen)

Having been rescued from death by a being named Esterath, the controller of the Glory, renegade Time Lord known as the Master was resurrected into the body of a recently deceased vagrant. Assuming that he was to battle the Doctor to gain control over the Glory, the Master trailed the Eighth Doctor using a symbiotic link he made with the Doctor's TARDIS.

Wandering the Time Vortex
His essence left wandering the Time Vortex, the Master was rescued by a being named Esterath, the controller of the Glory, the focal point of the Omniverse. The Master was told that it was time for the Glory to gain another controller, but the power had to be fought for. The Master assumed that the battle would be between himself and the Doctor.

After gliding over the many realities throughout the Omniversal Spectrum for what he described as seeming like "centuries", the Master was resurrected into the body of a recently deceased vagrant on the streets of 2001 Brixton. Some weeks afterwards, due to a symbiotic link he had formed with the Doctor's TARDIS when it consumed part of his essence after he passed through the Eye of Harmony, the Master was transported onto the Moon during one of the Doctor's adventures. The symbiotic link between the Doctor's TARDIS and the Master had also given the latter the ability to influence the flight of the TARDIS, which he used to send the craft to times and places which would weaken the Doctor's self-belief and confidence. The Master subsequently used this link to trail the Doctor for some time without his enemy suspecting. (COMIC: The Glorious Dead)

He was present in London during the crisis resulting from Grace Holloway's attempt to merge human and Time Lord DNA but was using the alien DNA of a Morphant by mistake. He killed Duncan, an MI6 agent, with his TCE. (COMIC: The Fallen)

Fight for the Glory
The Master later made contact with Sato Katsura, a Japanese samurai unwillingly rendered immortal as a result of his involvement in the Doctor's adventures. The embittered warrior became the Master's follower. At his behest, Sato adopted the identity of "Cardinal Morningstar" and became the leader of the Church of the Glorious Dead, instigator of a holy war that altered the history of Earth, a planet now renamed "Dhakan". After revealing his plot to the Doctor, the Master won a sword fight with the Doctor by stabbing him, but then learned that the true battle for the Glory was between Sato and the Doctor's companion, the Cyberman Kroton, of which Kroton was the victor. Amongst his first acts as the controller of the Glory were to cleanse Earth's history and the TARDIS of the Master's influence. Kroton sent the Master away to parts unknown, who declared he would survive and return. (COMIC: The Glorious Dead)

Despite his many attempted escapes, the Master would eventually return to the Eye of Harmony. (AUDIO: Planet of Dust) Eventually broken down to a gaseous state, the Master escaped the Eye of Harmony by influencing the dreams of Edward Grainger in 1906. (PROSE: Forgotten)

Appearance
In this new body, the Master resembled a black street preacher with a balding head. (COMIC: The Fallen) After revealing himself, he replaced his clothes with a more regal outfit. (COMIC: The Glorious Dead)