Supreme Dalek (New Dalek Paradigm)

The Supreme Dalek is the leader of the New Dalek Paradigm. It sports a white casing with metalic gray globes and a deep, booming voice.

Biography
After the War in the Medusa Cascade, all Dalek saucers were destroyed, except for one. This lone saucer fell back in time to World War Two. The three Daleks remaining onboard discovered a progenitor device which contained pure Dalek DNA that could be used to rebuild their empire. The progenitor did not recognise them as pure Daleks because their DNA was created from cells of Davros' body.

The three surviving Daleks set a trap for the Doctor, tricking him into identifying them as Daleks. Using his "testimony" they were able to activate the progenitor. The result was the creation of a new Dalek paradigm. They had a bulkier, hunched casing, a new eyepiece, a new-shaped dome, a neck section consisting of four flared rings, a thicker midsection and bumper, and a powerful laser which was capable of totally disintegrating enemies, including other Daleks. They destroyed their predecessors and attempted to destroy The Earth using an Oblivion Continuum inside their android Edwin Bracewell. The colour of the casing varied according to role/rank. The white was the supreme, the orange was the scientist, the blue was the Strategist, the yellow was the eternal, and the red was the drone. (DW: Victory of the Daleks)

When the Doctor travelled back in time to Kaalann to stop the Daleks' plan to rebuild their empire and invade Earth, a squad of Daleks led by a Supreme (possibly the same as the first one) arrived. The Doctor managed to erase their alterations and the Supreme Dalek, along with the rest of its squad, was destroyed. (VG: City of the Daleks)

The Daleks, led by a Supreme, joined The Alliance formed to imprison The Eleventh Doctor in the Pandorica in order to save the Universe. They arrived at Stonehenge, 102 A.D. along with the rest of the Alliance and locked the Doctor in the Pandorica. (DW: The Pandorica Opens)

The Alliance's plan failed to save the universe, and several races, including the Daleks, were wiped from existence, leaving only stone "after-images" remaining. When the Doctor reset the universe and timeline, the Daleks, along with all things that were destroyed throughout history, were restored to their original form and place in space and time. (DW: The Big Bang)

Behind the scenes

 * The Supreme Dalek's colour scheme is a reversal of the original series' Supreme Daleks, who were black with white bumps.
 * The voice of the Supreme changes in The Pandorica Opens as it is not as deep as it was in Victory of the Daleks. It is possible this is another Supreme Dalek which replaced the old one after it was destroyed (like the Supreme Dalek in City of the Daleks).