The episode was notable for its redesign of the Daleks into multi-coloured units, each with its own specific function. Writer Mark Gatiss acknowledged the controversial nature of this redesign in his in-vision commentary on the DVD box set. In conversation with principal Dalek voice artist Nicholas Briggs, and Dalek operator Barnaby Edwards, he said that the new shape of the Daleks, especially in the dorsal region, was not particularly to his liking. Briggs agreed but, with Edwards, swiftly noted that in their experience of taking the new Daleks on live exhibition to the public, British kids invariably loved the new design. The decision was revisited in DWM 431 with critics voicing their opinions on the design. A comparison was made with the RTD-era Daleks but no conclusion as to which was