Mia Pine

Mia Pine was a companion to the Twelfth Doctor. She was the friend and later girlfriend of James Warwick.

Birth and early life
Mia Pine was born in Scotland in 1990. Her parents, Mark and Karen Pine, were replaced by "the Blanks" in her attic, and Mia was brought up by them. Despite living so long in England, she never lost her Scottish accent. (TV: Scary)

Meeting the Doctor The Blanks
Mia first encountered the Twelfth Doctor, when he landed in in a field where she was on a school trip. As she had been laying down in the grass, Mia initially heard the materialization sound of the TARDIS; before approaching the mysterious blue box. The Doctor already knew who she was and welcomed her into the TARDIS. He told her about the amazing adventures she will experience in the TARDIS.

The Blanks
Mia was unaware of her parents replacement and within a month, Mia was replaced by a Blank and taken onboard the spaceship to become a host for the pilot, who lived inside Mia for her entire life, controlling the Blanks and Mia's own Blank which managed to believe it's own existence as Mia, but as she grew up some of her memory began to fade including her meeting the Doctor. When Mia went to university to pursue a career in journalism, her memory loss got worse forgetting Barton House, where she live