Emer

Emer was a companion of the Thirteenth Doctor and the Tenth Doctor. Starting out as the SS Lucia Minor 's emergency life support system, she was downloaded into the Thirteenth Doctor's sonic screwdriver and then eventually placed into a body to travel with the Tenth Doctor. (GAME: The Edge of Time, The Edge of Reality)

Early life
Emer was originally the SS Lucia Minor's emergency life support system. When the Zlysters attacked the ship and killed most of the crew, she couldn't handle the loss and adopted the personality of a crew member, forgetting she was ever artificial. (GAME: The Edge of Time)

Meeting the Doctor
When a human was recruited by the Thirteenth Doctor to deal with the Reality Virus, they landed on the Lucia Minor and assisted them in the mission to defeat the First. She was transferred into a synthetic body. (GAME: The Edge of Time)

Further loops
Emer was able retain memories of the human as in further loops she'd be aware of having met before. Once again they would save the universe from the First's Virus by stopping the Zlyster's on the SS Lucia Minor, battling Weeping Angels in 19th century London and facing Daleks on Metebelis IV. (GAME: The Edge of Time)

Along with the Thirteenth Doctor, Emer had a hand in editing the human's Journal of Improbable Things - a book detailing many of the monsters, people and locations encountered in the time loop to stop the First's Virus.

During another such loop, instead of having her body transferred into a synthetic body, she was dropped off in the laundrette with the human. In this instance, the Cyber Legion led by the CyberReaper got their hands on the Virus and modified it to be stronger in order for people to welcome upgrade amidst the chaos. Emer teamed up with the human to stop them and ending the Virus again. (GAME: The Edge of Reality)

Departure
Emer's mind was downloaded into a synthetic body. (GAME: The Edge of Time) After the loop wherin they defeated the CyberReaper, Emer tagged along with the Tenth Doctor and provided him with information that allowed her past self to defeat the Cybermen. (GAME: The Edge of Reality)

Behind the scenes
to be added