slats, neck rings and dome. It is uncertain who carried out the conversion work, although the painting of the prop was undertaken by the BBC Visual Effects Department under the direction of Clifford Culley. The ruthlessness of the Dalek Supreme is demonstrated in the story when it destroys the Dalek leader of the Spiridon task force for failing to meet its mission objectives. Necros Daleks In Revelation of the Daleks (1985) Davros creates an army of Dalek mutants by manipulating DNA extracted from humans on the planet Necros, where the terminally ill and the dead are being stored in suspended animation. These Necros Daleks are portrayed in the serial as a rebel faction while the grey Daleks from the Dalek home-world of Skaro, seen in the final episode, serve the Supreme Dalek. In this serial Davros' life-support chair is shown hovering a short distance above the ground. In a later scene a Dalek kills two saboteurs from an elevated vantage point, implying that Daleks now share this capability. For DVD releases of the serial from 2005 onwards new shots were created to clarify that the Dalek is hovering. Standard Necros Dalek The Necros Dalek design features detail changes which distinguish it from the standard Mark 3 variant. The skirt angle is steeper at both the front and rear and the hemispheres have a smaller diameter. The shoulder section has only twenty slats, and is broader at the top which, when combined with the skirt, gives it a stockier look. The arm is shorter and the oval between the appendage boxes more elongated. The neck bin strip beneath the lower neck ring is quite distinct in this variant. Necros Daleks are painted light cream with gold hemispheres, shoulder mesh, neck bin mesh, arm and gun. Glass Dalek Making a single appearance in Revelation of the Daleks, a Glass Dalek is introduced as a transparent, embryonic version of a Necros Dalek in which a grotesquely mutating human head can be seen. It has four neck rings rather than three. It was manufactured primarily from clear Perspex. Imperial Daleks In Remembrance of the Daleks (1988) Davros, masquerading as the Dalek Emperor, has gained control of Skaro. He commands an army of Imperial Daleks, created by grafting bionic appendages onto the bodies of Kaled mutants. The Supreme Dalek and its followers are now referred to by the Imperial Daleks as "renegades". Imperial Daleks have