Regeneration is coming to Doctor Who faster than the TARDIS’ can drop its passengers in Victorian London. And, just like the Doctor’s regenerations themselves, the changes coming to the show will mix up the new with some old. While Ncuti Gatwa is taking over from Jodie Whittaker as the Fourteenth Doctor, former showrunner Russell T. Davies is coming back to supervise the next season. With the 60th anniversary of the series quickly approaching, the BBC recently announced that two beloved actors from the Davies era are also set to make a comeback: David Tennant and Catherine Tate. Known for playing the most hilarious duo to ever walk the time stream, the Tenth Doctor and companion Donna Noble, Tennant and Tate share comedic chemistry unlike any other in the show’s history. Their unique brand of bantering and weird allure has even escaped the confines of the Whoniverse, reaching Shakespearean levels in a 2011 staging of Much Ado About Nothing.