Searcher One Leader

Searcher One Leader was a title held by the Black Dalek Leader in its position as commander of the spacecraft Searcher One.

Characteristics
As Searcher One Leader, the Black Dalek Leader's black casing sported gold accessories; the neck rings which supported its black neck grille, middle section bands atop and below the arm sockets, and the tall fender at the bottom of the lower section. The eyestalk that connected the eye lens, which appeared as a shining white disc at the face of a black ball, to the dome's pivot, along with the six discs that supported it, were coloured gold. The sense globes in the Black Dalek Leader's lower section were alternately coloured gold and silver. The dome sported two red, cone-shaped luminosity dischargers. (COMIC: The Archives of Phryne)

History
As reported by the Space News Agency, the Black Dalek had appeared in this casing as he planned the invasion of Alvega alongside the Red Dalek Leader several blue War Machine Daleks. (PROSE: Daleks Seek New Conquests)

After its recovery from the rust plague, (COMIC: Plague of Death) the Black Dalek led a force of Daleks in search of new technologies as war with the Mechanoids became evermore certain. The Black Dalek discovered an entire solar system hidden behind an invisibility shield and then directed the fight against Phryne. The Daleks successfully occupied the planet, although many Phrynians went into hiding to form a resistance movement. (COMIC: The Archives of Phryne)

Other references
In the film Dr. Who and the Daleks, the blue-and-silver War Machine Daleks followed a Red Dalek who itself followed Black Dalek, (PROSE: Peaceful Thals Ambushed!) whose casing appeared identical to Searcher One Leader. (COMIC: The Archives of Phyrne)

The Dalek Survival Guide indicated that this Black Dalek came from a version of reality "B" relative to the First Doctor's version of reality "A". They were aware of the "B" reality from "film evidence" and identified this Black Dalek as the Dalek Leader, the Red Dalek being a Dalek Lieutenant. (PROSE: Dalek Survival Guide)

Behind the scenes
Searcher Leader One's appearance matches that of the Black Dalek from the film Dr. Who and the Daleks.