Doctor Who: 10 Villains Who Should Return For Russell T Davies' New Series
4. The Macra
Though the Macra didn't originate in the RTD era (their first appearance was in 1967, opposite the Second Doctor), he was the last showrunner to use them as a villain.
The crab-like beasts were featured in Series 3's Gridlock, mindlessly stalking the depths of New New York after falling into evolutionary decline. There wasn't really anything compelling about this depiction, but with former showrunner Chris Chibnall having a knack for reworking classic villains in interesting ways, we'd like to see RTD follow suit.
The Macra were wasted in Gridlock, because it could've been any random creature lurking in the shadows. So what could RTD do with them if he puts them front-and-centre? What happened to them after Gridlock? We want those questions answered, and as an added bonus, a future Macra story could also serve as an excuse to revisit New New York - a nice hit of nostalgia for long-time fans.
Perhaps the Macra have re-evolved above ground, gaining some brains to match their brawn. With the bigger budgets Doctor Who has today, that concept could be done much more easily in future series.