Dalek Time Squad

The Dalek Time Squad was an elite battalion of Time-Sensitive Daleks deployed by the Emperor of the Restoration to attempt to exploit the "fluctuations in History" caused by the Tenth Doctor travelling back to the Dark Times and getting involved with the Kotturuh, (PROSE: The Guide to the Dark Times) which rewrote time so that the Daleks did not fight in the Last Great Time War. (COMIC: Defender of the Daleks)

The Time Squad contained five individual members: the Time Commander, the ancient Dalek Prime Strategist, a Scientist Dalek and a Dalek Executioner. Time-sensitive silver Dalek drones of the "basic model" were assigned to the Squad and were not supposed to think for themselves, although Melody Malone suspected otherwise. (PROSE: The Guide to the Dark Times)

Recruiting the Doctor
The Time Squad captured the Eighth Doctor’s TARDIS, pulling it away from Atharna, (AUDIO: He Kills Me, He Kills Me Not) planning to use it in order to travel back to the Dark Times where they can exploit the time fluctuations being caused there. (PROSE: The Restoration Empire) Oblivious to their true plans, the Doctor was asked by the Daleks for help, despite the Executioner’s desire to exterminate him. They went to Wrax, nominally to analyse the changes to the planet’s timeline but in truth the Daleks hoped to obtain the Wraxians’ Devolver. They made peaceful contact with the Waraxians. The Doctor went with the Strategist to explore the Wraxian galleries whilst the Commander, Scientist and Executioner met the Wraxian President. She agreed to demonstrate the Devolver and consider an alliance with the Daleks. She betrayed them however, planning to use the Devolver on the Daleks, and trapped the three Daleks. The Commander ordered the Drones aboard the timeship to invade Wrax to stop her, whilst the Doctor and Strategist managed to reach them. Per the Strategist’s urging, the Daleks let the Doctor negotiate with the President and he convinced her to dismantle the Devolver in return for the Daleks’ withdrawal. He revealed he had a theory on the source of the fluctuations but would only tell the Daleks when they had left Wrax. The Commander agreed, however secretly sent the Executioner back to Wrax to use the Devolver to wipe out the Wraxians. The Doctor told the Time Squad the alterations in time began in the Dark Times and connected his TARDIS to their timeship so they could travel back there. (AUDIO: The Enemy of My Enemy)

In the Dark Times
The Eighth Doctor and the Daleks confronted his future self’s Victis Fleet over Mordeela, alongside the Ninth Doctor in a Vampire coffinship. (PROSE: The Knight, The Fool and The Dead) In the ensuing Battle of Mordeela, the Daleks tore apart the Victis Fleet, despite the Eighth Doctor’s efforts to rein them in, however were forced back by Brian deploying a variety of ancient weapons. This enabled the Tenth Doctor’s ship, the last of the fleet not destroyed or fled, to destroy Mordeela as intended and then flee.

Under the leadership of the Strategist, the Scientist began experiments on a variety of life forms unique to the Dark Times, with the aim of creating a “Symbiont”, a more biologically efficient form of Dalek. Meanwhile the Commander and Executioner received pre-recorded instructions from the Emperor in the event of their failure to prevent the changing of history, which the Strategist was not privy to. The Emperor ordered them to take advantage of being in the Dark Times, including destroying Gallifrey before the Time Lords existed. Gallifrey was referred to as the “Ultimate End”. The Commander also ordered Dalek scout ships to wipe out the surviving Kotturuh, fearing they may judge the Daleks. The Eighth Doctor found himself sidelined, as the Daleks only needed him to ensure they could eventually escape the Dark Times. (PROSE: All Flesh is Grass)

Whilst in the Dark Times, they invaded the planet, Velosia, assuming the façade of helping the Velosians fight off the Kotturuh, only to murder the best and brightest Velosians and leave the surviving few on Velosia to await the Kotturuh.

Whilst working with the Eighth Doctor in the Dark Times, the Squad discovered an abandoned spaceship. They found a source of Huon energy aboard it and attempted to absorb it. The Daleks ran into difficulties until the Doctor helped them, prompting them to thank him for being their saviour again, to his discomfort. (COMIC: Tales of the Dark Times)

The Daleks began seeking a Great Vampire for the Symbiont experiments. They attacked the Ninth Doctor’s Coffin Ship, however the Eighth Doctor forewarned the Vampires so they could escape and met his future self to escape in his TARDIS. They traced a fleeing Vampire, Ikalla, to Entranxis where she had been captured by the Death Brokers. A scout ship invaded the planet however Ikalla escaped due to the presence of the Eighth, Ninth and Ten Doctors. As a Kotturuh ship approached the planet, the Daleks destroyed it and then used missiles to set Entranxis’ atmosphere alight.

The Time Squad managed to capture a Great One and the Strategist and Scientist used it to create a hybrid by infusing a Dalek with Vampire DNA; as such the resulting creature could not be killed due to the fact it was already "undead". The Tenth and Eighth Doctors and Brian discovered this after finding a Coffin Ship the Daleks had raided and infiltrated the Dalek saucer using a Bloodsman. They witnessed the Commander being presented the Symbiont, which the Daleks then ordered to attack them. The Doctors escaped however Brian hid and infiltrated the engine room, connecting an explosive to the engines which he wired to himself to prevent the Daleks killing him. He informed the Doctors that the saucer’s destination was Gallifrey, prompting the Doctors to organise a defence, and was rescued by the Tenth Doctor before the Daleks could kill him.

Numerous Dalek Drones were given the hybrid DNA, creating an army of undying Daleks. This newly created army was used to invade Gallifrey before the Gallifreyans had become Time Lords whilst the original Symbiont was sent to kill the last Kotturuh, Inyit, on Birinji. The three Doctors made a final stand against the Daleks over Gallifrey, assisted by Coffin Ships of the Free Undead, and eventually decided to crash their ship into the Dalek saucer in the hopes that the resulting paradox would destroy them. Before their final move was necessary however, the new army was defeated by the last remaining Kotturuh who used the last of her powers to pass judgement on the entire hybrid Dalek race. As the Daleks panicked, fearing the judgement might spread to pure Dalek DNA, the Eighth Doctor boarded the Dalek saucer and used a remote detonator to trigger Brian’s explosive in their engines, forcing the saucer into the Time Vortex and out of the the Dark Times. (PROSE: All Flesh is Grass)

Destruction
The Doctor continued to sabotage the Dalek saucer in the Time Vortex, leading to division between the Commander and Strategist over how to rectify the situation. The Commander favoured the Executioner and let it have autonomy to purge the ship of aliens whilst the Strategist worked with the Scientist to stabilise the ship. The Commander also had the Doctor’s TARDIS brought to the bridge to force the Doctor to confront him. The Doctor outwitted the Scientist by sabotaging the gravity in its laboratory and tricked them into cutting power from its lab. The Executioner became increasingly insane, damaging the ship further in its rampage to kill the Doctor and two aliens who had been released from cryogenic suspension. The Commander was unable to rein it in due to the autonomy he had granted it, to the Strategist’s frustration. The Doctor caused the hull of the ship to break after detonating an explosive he’d attached to the Scientist, leading to the saucer starting to break apart, and the Strategist attempted to bargain with him to escape in his TARDIS. The Doctor played along however exposed the deal to the Commander on the bridge, leading to a firefight between him and the Strategist. The Commander was killed, prompting the Drones to turn on the Strategist as a traitor whilst the Doctor escaped. (AUDIO: Mutually Assured Destruction)

Survivors
The Strategist survived the break-up of the saucer, observing other Daleks being torn apart by the time winds. He used Kotturuh crystals to power an emergency temporal shift to escape the Time Vortex. (PROSE: Exit Strategy)

A single Drone survived the destruction of the Time Squad, ending up adrift in space. It sent a message warning about the Doctor and that history was under attack, which was picked up by the Emperor at the start of the crisis. (PROSE: The Last Message) The survivor eventually boarded the Starship Future and attempted to reconstruct itself, coming into conflict with the Fourth Doctor. (AUDIO: Genetics of the Daleks)