"Other" Doctor

## Canon

The **"Other" Doctor** was the Nineteenth Doctor from an alternate timeline where the Sontarans took over the universe.

## Biography

### Post-regeneration

In an alternate timeline, the Eighteenth Doctor and Orla Adair were captured by the Sontarans and thrown into the Jaleidor prison soon after they departed ways with Damien Barrella and Milly Turzon. They eventually managed to escape and made plans to assault the Eye of Sontar - the team assembled comprising of the Doctor, Orla and the UNIT family; Johnathon Danielsen, Alicia Sallow and Kate Stewart.

However, the assault failed; resulting in everyone dying, the Doctor regenerating and the Sontarans winning, enabling them to conquer the universe. The Doctor woke up to find that her TARDIS had been stolen by the Zygritors and set out to find it after meeting RJ Barrella, whose parents, Damien and Milly had been killed. (TV: *Through the Looking Glass*)

### Early days

She began planning to go back in time to change time back to how it should be, with it taking many years to claim the TARDIS back, during which, the Doctor essentially raised RJ who was still just a child. (TV: *Through the Looking Glass*)

The Doctor was present in New York City with RJ at the same time as the Eighteenth Doctor, Osric Tennyson and Orla Adair were battling the Malevolent Empire.

After the Eighteenth Doctor and Avery left in the TARDIS, with Osric remaining at home as per his wish, the "Other" Doctor watched the TARDIS dematerialise as she pulled out a fob watch and an old photo of the Eighteenth Doctor, Ruby, Damien and Osric on the Great Wall of China. (TV: *The Empire of Doom*)

### Saving history

When Damien called the Eighteenth Doctor for help against the Lavakri, the “Other” Doctor was the one to arrive instead. She reprogrammed the Matrix used by the Lavakri to enter the minds of humans to trap them within their own, effectively rendering their physical forms permanently comatose. She did not display any remorse for this, stating that it was necessary. (TV: *Requiem of a Dream*)

Taking Damien with her and RJ, the Doctor assisted the Eighteenth Doctor and Orla in preventing the Sontarans and Rutans from taking over the Earth to be used as a strategic foothold. She left Damien with her past self and promised that she would explain everything at a later date. (TV: *World's At War*)

With time running out to save history, the Doctor tracked down the Eighteenth Doctor, Damien and Orla to explain the circumstances behind her existence, what happened in her timeline and how she met RJ. She also explained that RJ was Damien and Milly’s daughter from her timeline. (TV: *Through the Looking Glass*)

The presence of the "Other" Doctor and RJ influenced events enough for the timeline to change; causing Damien to remain with the Doctor and so he and Milly were both captured as well, with all four now being sent to Jaleidor. They all escaped as what also happened in the original timeline (TV: *Reality of Lies*) - and infiltrated a Sontaran Data Vessel in order to discover what the Eye of Sontar actually was. After finding out the truth, the Eighteenth Doctor activated a beacon that summoned the Doctor and RJ to Earth as well as gathering Kate, Johnathon and Alicia to help him on the planned assault.

The team were sorted into two groups; with the Doctor being placed in Team Two alongside Johnathan, Alicia, Kate and Orla who were tasked with providing a significant distraction to the Sontarans to buy Team One led by the Eighteenth Doctor time to complete their task of reaching the Eye and shutting it down. (TV: *Victory of the Sontarans*)

After RJ sacrificed her life to shut down the Eye of Sontar, it started to malfunction which knocked out the Sontarans via static electric blasts - leading the Doctor to detonate the core powering the Sontarans' facility. This fatally wounded Commander Lar who died just before the facility went up, taking the Eye with it. The Sontarans now defeated, the Doctor’s alternate timeline had successfully been averted and she faded from existence, content at having saved history. (TV: *The Eye of Sontar*)

## Appearance

The "Other" Doctor resembled a woman of above average height in her late forties, possessing tan skin, brown eyes and big, curly black hair that rested just above her shoulders.