Tardis:Merging policy

The Dalek Prime, later known as the Dalek Emperor or Golden Emperor, and, on occasions, as the Master Brain, (COMIC: City of the Daleks) was the first Dalek Emperor, and was originally the first Dalek ever created (COMIC: Genesis of Evil, PROSE: The Evil of the Daleks, War of the Daleks). Experimenting on himself, both genetically altering his organic self and moving into larger and larger casings, the Dalek Prime saw himself as superior to his brethren as well as their rightful leader, moreso than the Kaled scientist Davros, whom he believed to be a dangerous madman.

Creation
Following the neutronic war which nearly destroyed Skaro, causing both the Thals and their enemies to mutate beyond recognition, nothing stirred on the planet for two years. Two of the Daleks' humanoid forebears, Zolfian and Yarvelling, finally exited the fallout shelter in which they had survived all this time, and came across a mutated member of their species. It had a brain "a thousand times superior" to theirs by Yarvelling's analysis. Being nearly strengthless (and as weak to the lethal radiations as anyone), had retreated into one of Yarvelling's war machines. This individual was the first of the new race of Daleks. (COMIC: Genesis of Evil)

According to another account, the first Dalek was created by the Kaled scientist Davros, and was the one to subsequently attempt to murder him in an application of the very same pitiless mindset with which Davros had programmed his creations. (TV: Genesis of the Daleks) Though identifying himself as the Dalek who fired on Davros, (PROSE: The Evil of the Daleks, War of the Daleks) the Dalek Prime also knew that he and his race were originally to have developed independently as a result of the neutron war; he accused Davros of having interfered with the Daleks' destiny in an effort to gain power over them, accelerating their evolution for his own ends. He stated it was this "futile madness" which had prompted him and the other early Daleks to elect to destroy Davros. (PROSE: War of the Daleks)

Becoming the Emperor
According to one account, the Dalek Prime was soon given a new and larger casing with a disproportionately large spheroid head section. Made out of Flidor gold, quartz and Arkellis flower sap, it also had three sense globes on each panel of its base unit unlike other Daleks. The first Dalek Emperor was now in charge, presiding over the construction of a Dalek City and taking part in the early days of the Dalek Empire's space conquest. (COMIC: Genesis of Evil, Power Play, The Amaryll Challenge et alt.)

According to another account, following the end of the war, the Dalek Prime spent his time conducting experiments on other life-forms on Skaro, creating mutations which went on to inhabit the petrified jungle and the Lake of Mutations near the foot of the Drammankin Mountains. Eventually the Dalek Prime discovered the molecules that could cause further mutation within a Dalek, and created a drug from its research which would initiate the mutation. Not prepared to test the drug on any Dalek in case it grew beyond its capabilities, the Dalek Prime used the drug on itself and evolved to the peak of Dalek evolution with hugely enhanced mental powers. Only later did it proclaim itself the Emperor of the Daleks. (PROSE: The Evil of the Daleks)

The genetically-modified Dalek, going by the designation of "Genetic Variant Two-One-Zero", was one of several modified Daleks being tested for leadership. Sent to the planet Shade, it had to collaborate with Steven Taylor to survive Chaons who infested the planet and to get to a transmat station to escape.

Several times over, Steven saved Two-One-Zero from death, once taking it out of its casing and carrying it in his hands wrapped in a tarpaulin. During the whole ordeal, Two-One-Zero exhibited qualities unusual for Daleks: he tried to save human prisoners' lives and exterminated another Dalek to save Steven's life. He promised to give Steven a transmat code to return back to the First Doctor and Vicki on the planet Entropica, but betrayed Steven in the very end, giving him transmat coordinates that would lead him to certain death had he not been saved by the First Doctor.

Upon returning to Skaro, Two-One-Zero demonstrated that it was indeed a superior Dalek as it was the only genetic variant to return from the ordeal. Hence, it was transferred to a new casing and officially declared the Emperor of Daleks, its experience with Steven prompting it to search for the Human Factor as a way to achieve total Dalek domination over the universe, (AUDIO: Across the Darkened City) an intention it would follow up on much later. (TV: The Evil of the Daleks) To be further written