Companion (Doctor Who) "Face the Raven", but in a subsequent episode ("Hell Bent") her time stream is frozen at the moment of death by the Time Lords so that they can interrogate her about the Hybrid; the Doctor takes advantage of this to save her life, but she remains technically neither alive nor dead, does not age or have a pulse. After her departure as a companion of the Twelfth Doctor, she teams with the immortal Ashildr and travels in a stolen TARDIS. Other companions died in alternate timelines or alternate lives. "Brigade Leader" Alistair Lethbridge-Stewart, "Section Leader" Liz Shaw, and "Platoon Leader"
The Dark Crystal the planet Thra, a magical crystal is cracked, which allows two new races to appear: the malevolent Skeksis, who use the power of the "Dark Crystal" to continually replenish themselves, and the kind wizards called Mystics. Jen, a young Gelfling taken in by the Mystics after his clan was killed, is told by his Mystic master that he must heal the Crystal, which can only occur if he finds a shard of which is held by the astronomer Aughra. If he fails to do so before the planet's three suns align, then the Skeksis will rule forever. Jen's master then