Ncuti Gatwa has officially taken command of the TARDIS as the Fifteenth Doctor on Doctor Who. The final Doctor Who 60th anniversary special, "The Giggle," pitted David Tennant's Fourteenth Doctor against the Toymaker, a classic villain brought back to screens by How I Met Your Mother's Neil Patrick Harris. The Doctor's reunion with the Toymaker -- a reunion 57 years in the making -- proved deadly and brought the Fourteenth Doctor's tenure to an end. However, this ending wasn't quite as final as previous regenerations have been. Although the Fifteenth Doctor is now leading the series, the Fourteenth Doctor's life isn't over.
Source：https://www.cbr.com/doctor-who-bigeneration-ncuti-gatwa-fifteenth-doctor/
