Voyager

Voyager was a shadowy figure who haunted the Sixth Doctor's dreams. He travelled on his "Death-ship" and the Doctor dreamt Voyager held him captive on it. He claimed to be "a Lord of Life" to match the Doctor's being "a Lord of Time"; the Doctor believed him to be "either a god or a ghost". (COMIC: Voyager)

Origins
Being a Lord of Life, (COMIC: Voyager) one account suggested that Voyager was an agent of the goddess Life. (PROSE: Hark! The Herald Angels Sing) Like Astrolabus, Voyager considered logic to be "a new toy", (COMIC: Voyager) having been introduced to the universe by the Time Lords in the anchoring of the thread. (PROSE: Christmas on a Rational Planet, The Book of the War)

The Sixth Doctor thought it possible that, "aeons" before the Doctor's time, Voyager had sailed through the dreams of Rassilon, inspiring him to the greatness he would achieve, although he was not sure that Voyager would have concerned himself with a Lord of Time, being a Lord of Life. (COMIC: Voyager)

Seeking the star-charts
Sacred star-charts belonging to Voyager were stolen from him by the Time Lords, who made them into The Book of the Old Time. The book was subsequently stolen by a renegade Time Lord, Astrolabus, who was exiled from Gallifrey and took the charts with him. Voyager pursued him, eventually hounding him down to a rocky formation on the impossible "edge of the universe", tipping over from a stormy sea into the Void, into which Voyager and his ship were able to sail after Astrolabus escaped once more.

During his time hunting Astrolabus, Voyager also appeared in the dreams of the Sixth Doctor, an apparition which terrified the Doctor but also helped him in cryptic ways. When Astrolabus escaped, Voyager ordered the Doctor to find him and to get Voyager's charts on his behalf, holding all Time Lords responsible for the theft. (COMIC: Voyager)

Final encounter with Astrolabus
When the Doctor located Astrolabus, who had fled into a "magical cabinet" that contained a pocket dimension rooted in fiction, Voyager appeared, riding the back of a camel. As Astrolabus had tattooed the star-charts on his own skin in an effort to fully absorb their power and make it impossible for anyone else to take it back from him, Voyager summoned a sandstorm which scraped Astrolabus's skin away from him. Having taken back the knowledge from the thief, Voyager departed, leaving the flayed Astrolabus to die. (COMIC: Once Upon a Time-Lord)

Later legacy
It was thought that Voyager killed several other blasphemers and immortality-seekers before the War, and that, unlike many other powerful beings, he continued his endless mission even throughout the War in Heaven rather than flee the universe. (PROSE: Hark! The Herald Angels Sing) Auteur, a rogue Godfather of Faction Paradox who survived only thanks to his shadow-skin, claimed that his original skin had been stolen from him "by Life itself". (PROSE: Going Once, Going Twice)

Appearance
Voyager appeared as an old man who wore a parody of House regalia. He spoke in a thunderous voice and, at times, did not appear to move or draw breath, being absolutely still. (COMIC: Voyager, PROSE: Hark! The Herald Angels Sing)