- You may be looking for the Renegade Daleks' Time Controller device.
The Dalek Time Controller was a Dalek from the far future, born from generations of genetic manipulation with the intent of creating a Dalek that could understand the "unfathomable patterns" of the Time Vortex, serving as "the ultimate victory of the Daleks through pure strategy."
The Dalek Time Controller and the Doctor encountered one another on sporadic occasions in their respective timelines, with the Time Controller's first encounter with the Doctor occurring after the latter had encountered the former on several occasions (PROSE: The Dalek Generation) in at least two younger incarnations. After an encounter with the Sixth Doctor — whose encounter here was the Doctor's first meeting with the Dalek Time Controller (AUDIO: Patient Zero) — the Dalek Time Controller fought the Eighth Doctor numerous times before fusing into the Eminence. (AUDIO: Lucie Miller / To the Death, Eye of Darkness)
The Dalek Time Controller oversaw the New Dalek Paradigm's scheme to transform the 400 Sunlight Worlds into "a billion Skaros." He manipulated the TARDIS' destinations in the Time Vortex and led the Eleventh Doctor into uncovering the secrets to the Cradle of the Gods. The Time Controller also outranked the Dalek Supreme on this mission and countermanded the Supreme's orders to take action, lest it disrupt the flow of time.
The Time Controller posed as the Dalek Litigator — a judge in the law courts of the Sunlight Worlds. He acted as the prosecution when the Eleventh Doctor was placed on trial on two occasions for claiming the Daleks were evil (something considered a hate crime), outwitting him on both occasions.
The plan backfired when the Doctor managed to convince a Dalek puppet, Jenibeth Blakely, to turn on the Time Controller. While undamaged by the fire from Jenibeth's weaponry, the Time Controller promptly retreated, but not before fatally shooting Jenibeth. (PROSE: The Dalek Generation)
When the Daleks tracked Patient Zero to the Amethyst Viral Containment Station in the past the Time Controller commanded a mission sent there, planning to move the station through time to the Daleks. The Sixth Doctor damaged their operations and left them trying to fend off an explosion. However, the Time Controller realised the explosion at the Amethyst Viral Containment Station had caused the viruses to be scattered through time and allowed it to happen. The Doctor believed the Time Controller had been destroyed in the explosion. (AUDIO: Patient Zero)
However, he was blasted back through the Time Vortex to the late 22nd century where he was retrieved by the Daleks, though he was decaying from his experience. They contacted the Monk due to his temporal knowledge, and he was able to repair him. The Dalek Time Controller took control over Dalek operation and orchestrated the second Dalek invasion of Earth, forcing the Monk to release another plague to weaken humanity. He planned to use Earth as a spaceship containing the viruses from the Viral Station, having seen where they would end up while it was in the Vortex and installing a time warp engine into Earth to travel to this point. The plague planet could then be piloted through the Universe, infecting entire planets which would later threaten the Daleks in the future. Ultimately, the Time Controller, and all Daleks on his ship, were dragged into a time warp thanks to Lucie Miller crashing a Dalek Saucer containing a bomb into the mine. (AUDIO: Lucie Miller / To the Death)
However, the Time Controller was saved from destruction by Kotris. (AUDIO: X and the Daleks) From then he oversaw the chasing of the Eighth Doctor and Molly O'Sullivan through time and space, (AUDIO: Fugitives) by using a relativity map and a Temporal Chamber to create a Space-time projector. Using retro-genitor particles implanted inside Molly, he and Kotris planned to destroy the Time Lords. (AUDIO: Tangled Web, X and the Daleks) After the Daleks killed Straxus, Kotris was removed from history. The Dalek Time Controller's plans involving Kotris were therefore erased. The Dalek Time Controller was aware of the change in history while it occurred, and swore to Kotris before he was erased, that he would destroy the Time Lords. (AUDIO: X and the Daleks)
The Dalek Time Controller oversaw the invasion of Nixyce VII, and created mines in the planet to create a Dalek superweapon. The Doctor detonated a bomb located on a nearby Dalek in the Time Controller's chamber, damaging the Time Controller and causing him to flee to his ship in orbit above the planet. (AUDIO: The Traitor) Rather than destroying the weapon, the Doctor asked for the Dalek Time Controller's help in defeating the Eminence, who posed a bigger threat to the Daleks than the Doctor. (AUDIO: Eyes of the Master) The Dalek Time Controller agreed, and used the weapon to destroy the Eminence fleet. (AUDIO: Time's Horizon)
The Time Controller later arrived in Paris, where he created Adelaine Dutemps from his own DNA. The Time Controller then created Dalek Time Strategists from the criminal minds that Adelaine dealt with. He used the power of the Time Vortex to create them. He wanted to create a new Paradigm so that he could control Daleks throughout all time. The Time Controller asked Liv Chenka some questions about The Eminence war, and the Doctor's involvement. When the Time Controller opened his corroded casing to show Liv his eye, it was dark like Molly's. The Time Controller used the Red Pagoda and the TARDIS to create a larger shell. (AUDIO: The Monster of Montmartre)
The Controller travelled with the Master to the control centre. The Controller wanted to find Markus Schriver. The Master told the Controller that they were running out of humans to convert into Daleks, so they were now using Sontarans. The Dalek Time Controller planned to betray the Master if the Doctor was well enough. After the Master's Dalek mutiny, he escaped with Liv and Molly in the TARDIS. (AUDIO: Master of the Daleks)
The Dalek Supreme came to believe that the Time Controller was no longer a pure enough Dalek, having lived outside time through so many time shifts. The Supreme believed him to have been destroyed, when in actuality the Dalek Time Controller had transferred his consciousness into the gas created by Markus Schriver, joining his personality with Schriver's and thus creating the Eminence. The Dalek Supreme then commissioned the creation of a new Dalek Time Controller from the remains of Adelaine Dutemps. Molly O'Sullivan sacrificed herself to destroy Schriver and the Time Controller for good. After the Time Controller's destruction, the remains of his wife, Adelaine Dutemps, were reconstructed into his replacement as the Dalek Time Strategist. (AUDIO: Eye of Darkness)
Whilst overseeing the operation of the Sunlight Worlds, the Dalek Time Controller’s casing constantly shifted in colour and shape, with a pair of rings rotating diagonally across its larger grating section; from afar, these rings appeared solid, but when viewed closer to the Time Controller, they wavered, more closely resembling the debris fields of a gas giant. These rings could also spin at different speeds. The Time Vortex could be seen inside the grating section as well, and even possessed some degree of a suction effect. When masquerading as the Dalek Litigator, the Dalek Time Controller resembled a standard Bronze Dalek drone, although the shimmering effect generated by its grating rings was still noticeable by time-sensitive individuals such as the Eleventh Doctor. (PROSE: The Dalek Generation)
However, when encountered by the Sixth and Eighth Doctors, the Dalek Time Controller had a far more stable form, appearing similarly in shape to a Silver Dalek drone, whilst retaining its enlarged grating section and pair of neck rings. It possessed black sense globes, and its dome, weapons platform and base unit were coloured blue, (AUDIO: X and the Daleks) although in one instance, these were instead coloured purple. (AUDIO: Eye of Darkness)