Time Force

The Time Force was a destructive mass of blue particles that was unleashed in the aftermath of the Flux, which came to be known as the Great Disruption. It was the natural result of time running wild and was caused by the breaking of four of the Mouri, who maintained the flow of time from the Temple of Atropos on the planet Time. (TV: Once, Upon Time) Two were broken by the Flux according to the Priest Triangles, whereas a further two were disintegrated by the Ravagers Swarm and Azure to be replaced with Yasmin Khan and Inston-Vee Vinder. (TV: War of the Sontarans)

Much like the Flux, the Time Force destroyed all it came into contact with. It was encountered by Bel on a Dalek-invaded planet, and by Dan Lewis during a time storm in his time stream inside the tunnels dug out by Joseph Williamson in 1820 Liverpool.

Although the Mouri were replaced in an attempt to undo the damage done to time, at first temporarily with Yaz, Vinder, Dan and the Thirteenth Doctor, and then permanently with four Mouri hidden inside a Passenger, it was too late as the Ravagers had already harnessed particles of the Time Force for their own goals. (TV: Once, Upon Time)

The Time Force, in conjunction with spatial energy harvested from lifeforms trapped within the Ravagers' Passengers, (TV: Survivors of the Flux) as well as the psychic link that once existed between the Old Swarm and the Fugitive Doctor and had been reactivated between the New Swarm and the Thirteenth Doctor, (TV: The Halloween Apocalypse) allowed Swarm to build a psycho-temporal bridge to the Doctor, which he and his sister used to cross into the Division ship outpost, situated in the Void between Universes One and Two, where the Doctor had been transported to by Tecteun. (TV: Survivors of the Flux)