The Doctor uses the sentient entity known as "Passenger," which has an infinite internal capacity, to absorb the destructive energy of the Flux and save what remains of the universe. Villain Defeat:
The Doctor decides not to open the fob watch containing her lost memories, choosing instead to hide it deep within the TARDIS. Character Fates & Critiques Doctor Who: Series 13, Episode 6 – Flux: Chapter Six [S13E6] Chapter Six: The Vanquishers
He is ultimately outmaneuvered by Kate Stewart and Vinder, who exile him to a lonely asteroid. The Doctor uses the sentient entity known as