Dalek (The Lights of Skaro)

This Dalek was one of the combatants of the Thal-Dalek battle that died after the First Doctor, Ian, Barbara, Susan and the Thals stopped them from exploding the Neutron bomb. (TV: The Daleks)

However, this wasn't the Daleks' final end as some of the Daleks including this one survived. It was one of the old Dalek designs that could only travel on electricity via metal floors as it could not leave its city. Vince Foster, a journalist, made his way through a control room. He knew of the Daleks and explained to Varna about some of their workings. He was helping Varna protect her world from the Thals. He wanted to use the Daleks for his own ends, seeking an alliance with them, only to be exterminated by the Dalek he had revived. When the Dalek turned its attention to Varna, who identified as an ideal Kaled, and thus did not want suffering. Initially believing the Daleks to be Thal inventions, she was horrified to discover the Kaled mutant within the Dalek with it exterminating her soon after.

Later, Bernice and the Seventh Doctor showed the Dalek its future self. Its older counterpart designated that it no longer sought desire to leave its travel machine much to the disgust of its younger self. Two versions of the same Dalek opened fire and killed each other creating a paradox, restoring the time stream. (AUDIO: The Lights of Skaro)