Information from Destiny, which itself leads to the discussion that this is an alternative timeline, not universe
These omissions are so great that the article's factual accuracy has been compromised. Check out the discussion page and revision history for further clues about what needs to be updated in this article.
In an alternate timeline, the Fourth Doctor chose to destroy the Daleks at their creation. This led to a Time War across the universe, for which the Doctor chose to become the Warrior.
History[]
During his mission to interfere with the creation of the Daleks, (TV: Genesis of the Daleks) Sarah Jane Smith successfully convinced the Fourth Doctor to destroy the Daleks in the incubation chamber. This alteration to history had massive repercussions, generating millions of aberrant timelines including versions of the Sixth Doctor and Peri Brown similar to those of N-Space. After making his choice, the Fourth Doctor and his companions attempted to retrieve their time ring but were cornered by a prototype Dalek who exterminated Sarah and Harry and mortally wounded the Doctor, who was subsequently extracted by the Time Lords. (AUDIO: Dust Devil) The Doctor's genocidal actions compelled the Kaleds and Thals to come together into the Unified Skaroan Alliance, along with surviving Daleks. Finding the leftover time ring, the Alliance developed time travel and sought to control the universe. (AUDIO: Aftershocks)
Upon being retrieved, the Fourth Doctor was informed by Narvin that the Daleks still existed and the universe was now in the midst of a Time War. Narvin provided the Doctor with an elixir so he could regenerate, with the Doctor deciding to become a warrior. In his new incarnation the Warrior oversaw the termination of the aberrant Sixth Doctor by time bullets. (AUDIO: Dust Devil) Shortly after his regeneration, the Warrior was guided by the Master into sealing off a timeline where the Unified Skaroan Alliance won the Time War and ruled time, containing it in a Carrisent Particum. (AUDIO: Aftershocks)
The Warrior eventually became President of the Time Lords. He initiated a ruthless policy to stop Time Lords travelling back in time to prevent their past selves committing atrocities in the Time War, having the Difference Office intercept and execute them. During his presidency Gallifrey was targeted by the Kraals who were part of the Dalek alliance. Led by Styggron, the Kraals lowered the Time Lords' defences by using an android duplicate of the Sixth Doctor to stir up unrest among the Shabogans to bring down the Capitol's defences, so Styggron could infiltrate the city. Aided by Romana, the Warrior defeated his invasion by using the Relics of Rassilon to atomise the Kraal invasion fleet and, returning a promise he'd made to Borusa, killed Styggron himself. (AUDIO: The Difference Office)
Under the Warrior's supervision, the Master pretended to be the god Xoanon to manipulate the Tesh and Sevateem on Mordee. He manipulated Leela and Gentek into becoming a couple and conceiving a new race to help with the Time War. He then killed Gentek and used a device to accelerate Leela's pregnancy until she gives birth, then growing her newly born twins into adults. Unable to resists his commands and Leela being too weak to fight back, he orders the twins to abandon Leela outside his TARDIS before departing. (AUDIO: Who Am I?) The Warrior and the Master subsequently tried to track down an apparent temporal weapon on the planet Marinus, but when the Warrior established that this was the result of a temporal anomaly caused by the TARDIS's initial materialisation, he left the planet to be destroyed by the subsequent temporal anomalies, also leaving the Master behind as he concluded that his former friend could no longer help him. (AUDIO: Time Killers)
After an unknown amount of time, the Warrior had become old and resigned to the idea that the Time War, the Warrior was contacted by the White Guardian, who directed him to find the Key to Time with the company of Davros. Either because it has been too long or because of the chaotic nature of the Time War, the two didn't recognise each other but agreed to work together. The two were able to assemble six segments of the Key while the Guardian was able to help them put the Key together, but it was apparently destroyed by another group who sought to end the War by destroying the rest of existence. However The Guardian revealed that the Warrior and Davros actually personified the power of the Key within themselves: the physical form of the Key was unimportant as the seekers had absorbed its power into themselves. Recognising that they were the key players in the Time War as the ones responsible for the whole conflict, the Warrior and Davros used the power to take themselves out of time completely.
While Davros found himself caught in a loop where a Dalek would execute him, the Warrior was apparently able to reset his timeline so that the Doctor never touched the original wires together, transferring a part of himself back to his original visit to Skaro and resuming his travels with Sarah and Harry even as another part of his consciousness remained trapped outside time. (AUDIO: The Key To Key To Time)