Doctor Who shocked audiences in 2022's "The Power of the Doctor," when Jodie Whittaker's Thirteenth Doctor regenerated into a new incarnation played by David Tennant. Tennant is obviously best known to Doctor Who fans as the Tenth Doctor, whom he portrayed from 2005 to 2010, and again in 2013's 50th anniversary special, "The Day of the Doctor."
Source：https://www.cbr.com/doctor-who-fourteenth-doctor-past-regenerations/
