a similar colour scheme to Necros Daleks, but the designs are otherwise quite distinct from one another. At the direction of BBC visual effects designer Stuart Brisdon, they were realised by the BBC Plastics / Plastering Department using different sets of props created from flexible silicone moulds, enabling both 'hero' props, and lightweight, rigid foam versions for pyrotechnic sequences, to be constructed quickly. Standard Imperial Dalek The Imperial Dalek shares a skirt design with the Necros Dalek. In other respects it features many differences when compared with previous variants. It has a stepped fender incorporating a recessed bottom section and integrally moulded collars and slats with no shoulder mesh. There are circular bosses around the appendage ball joints, a hexagonal panel between the appendage boxes, a re-modelled eye and eye discs, a mirrored eye lens with a small gold pupil, flush dome lights and a notched, funnel-like appendage instead of a plunger. The dome has a slightly larger diameter with a sharper angle where the bevelled section meets the curved upper part. The neck bin has a mirrored gold finish and is detailed with a fine circular-section gold mesh overlay, replacing the usual diamond section design. The props are painted predominantly light cream with gold hemisphere, slats, arm, "plunger", gun, eye discs and light covers. The hovering capability first seen in Revelation of the Daleks is confirmed in Remembrance of the Daleks when an Imperial Dalek is shown levitating up a staircase, emitting a red glow from the base of its casing. Special Weapons Dalek The Special Weapons Dalek is a heavily armoured Imperial variant first seen in Remembrance of the Daleks and later in "Asylum of the Daleks" (2012), "The Magician's Apprentice" (2015) and "The Witch's Familiar" (2015). It has no manipulator arm, eye-stalk or dome lights, the latter items being replaced by an encircling row of small, square, translucent ports set around a foreshortened neck section and beneath a truncated dome. In "The Witch's Familiar" the ports are shown to glow with an orange light when the Dalek speaks. It is equipped with a large energy cannon mounted on the front of the casing, which in Remembrance of the Daleks is portrayed completely vaporising two conventional Daleks with a single shot, leaving only scorch marks on the ground. The armour is seen deflecting conventional Dalek weapon fire without suffering damage. Like other Imperial Daleks its livery is white