Gallifrey

Revived series

Gallifrey is destroyed again by the Master in the 2020 episode "Spyfall", with the Master exterminating all Time Lords in the universe off-screen with a "genetic explosion". The Master later converts the Time Lords into mechanical cyborgs known as Cybermen in the 2020 episode "The Timeless Children". These Cybermen, dubbed "Cybermasters", have the ability to regenerate, unlike regular Cybermen. The Master reveals to the Thirteenth Doctor that she is the Timeless Child. The Doctor is able to rig a "death particle" to destroy all organic life on the planet, destroying most of the Cybermasters, though some are implied to escape with the Master. The Cybermasters re-appear during the events of the 2022 special "The Power of the Doctor", and are seemingly all killed during the episode.