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 Renegade Daleks opposed to the white Imperial Daleks loyal to Davros. (TV: Remembrance of the Daleks)

History
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)

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)