Scientist Dalek (Victory of the Daleks)

The first Scientist Dalek of the New Dalek Paradigm was created as one of five new Dalek types by the Progenitor aboard their last surviving ship above Earth in 1941 when the last three Daleks tricked the Eleventh Doctor into allowing them to activate the Progenitor device. The five new Daleks escaped through a time corridor and went on to rebuild their empire, (TV: Victory of the Daleks) and remained its ultimate leaders until the institution of the Parliament of the Daleks with its Prime Minister. (PROSE:  The Astounding Untold History of the Greatest Enemies of the Universe)

After the decision-making of the Parliament was crippled by their forgetting the Doctor, (TV: Asylum of the Daleks) the original Paradigm Daleks returned to the leadership of the Empire. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)

Behind the scenes

 * As with its fellow new Daleks, the Scientist Dalek in Victory of the Daleks was depicted with a specially created prop. This prop was later modified to serve as the static Stone Dalek in The Big Bang.