text1: What icons were reintroduced in series 2 of the revival show?
text2: Who one step at a time: the Autons with the Nestene Consciousness and Daleks in series 1, Cybermen in series 2, the Macra and the Master in series 3, the Sontarans and Davros in series 4, and the Time Lords (Rassilon) in the 2009–10 Specials.