10 Disturbing Backstories Behind Doctor Who Characters

Clara is one of the most interesting companions to ever take up with the Doctor, who called her "impossible." Her life was intertwined with the Doctor's in such a way that she continued to be reincarnated alongside the Time Lord's timeline, and plenty of those lives were inescapably horrific.

To try and undo the damage done to the Doctor's timeline by the Great Intelligence, Clara Oswald stepped inside. The time winds shattered her into millions of echoes scattered throughout the Doctor's personal timeline. The echoes managed to correct the damage, but she remained a part of the Doctor's entire existence.

This action inadvertently created the conditions that resulted in Clara's backstory taking on a disturbing tone. She was found by the Doctor in numerous places and times, and she often died soon after the two came into contact with one another.

The first time Clara is shown comes when the Doctor heads to the "Asylum of the Daleks," where he meets the young woman who bakes soufflé. As it happens, she was turned into a Dalek and was suffering from the reality of what she became. That's only one example; far more were created when she stepped into the Doctor's timeline, and most were less-than-perfect.