Black Dalek Leader

A Black Dalek loyal to the Emperor Dalek led the Daleks against Davros' rebels on Spiridon. (COMIC: Emperor of the Daleks!)

Behind the scenes
Despite being depicited as a dark Purple Dalek in the colourised fourth part of Emperor of the Daleks!, this Dalek leader is later identified as the "Black Dalek" by the Seventh Doctor.