Grey Dalek

Grey Daleks (PROSE: Remembrance of the Daleks) were the basic Daleks, beginning with the first Mark III Travel Machines unveiled by Davros. (TV: Genesis of the Daleks) They served throughout the bulk of the Daleks' history prior to the Last Great Time War. (TV: Destiny of the Daleks et al.) During the Imperial-Renegade Dalek Civil War, they were classed as Renegade Daleks, loyal to the Supreme Dalek and opposed to the white Imperial Daleks loyal to Davros. (TV: Remembrance of the Daleks)

History
Grey Daleks fought in a war against the Movellans, (TV: Destiny of the Daleks) as did later Bronze Daleks. (TV: The Pilot)

A grey Dalek was time scooped to the Death Zone on Gallifrey, where it tried to exterminate the First Doctor and Susan Foreman, only to be destroyed when they pushed it into a dead end, causing its energy weapon to ricochet and destroy it. (TV: The Five Doctors)

In a vision of his future, the Eighth Doctor saw "a conical robot, gunmetal-grey" which swung a camera eye at him with the lights on the top of its head flashing angrily. (PROSE: Father Time)

Looking into his future via the Tomorrow Window, the Eighth Doctor saw "squat machines in gunmetal grey" gliding through the rubble of a ruined city beneath a flying saucer, their eyestalks scanning from left to right. (PROSE: The Tomorrow Windows)

Some Grey Daleks survived encounters with the Doctor and were classed as insane and taken to the Dalek Asylum. The insane Daleks died when the asylum was destroyed by the Parliament of the Daleks. (TV: Asylum of the Daleks)