David Tennant is, by far, the most famous actor to ever take up the mantle of playing the bombastic and eccentric Time Lord in the BBC series Doctor Who. He has inspired and captivated millions with his fiery and deeply personal portrayal. However, with rumors circulating that Ncuti Gatwa is retiring from his run as the 15th Doctor, and fears of the show being axed on the horizon, bringing Tennant back for a third time sounds more like desperate, wishful thinking, than a seriously thought-through idea.