Graham O'Brien

Graham O'Brien was a companion of the Thirteenth Doctor. He lived in Sheffield with his wife Grace and her grandson Ryan Sinclair.

Following the death of his wife, Graham chose to travel with the Doctor as a way of coping with his grief, rather than allowing it to consume him in a house filled with the memories she left behind.

Biography
Graham was originally from Essex. (TV: The Witchfinders, PROSE: The Good Doctor) When he was a young boy, Graham attended Sunday School in Chingford. (PROSE: The Good Doctor)

As a child, Graham sometimes spent summer holidays at Margate and Whitstable. (PROSE: The Good Doctor)

Graham worked as a bus driver, and still had some friends who worked as bus drivers after he had retired. (TV: The Woman Who Fell to Earth)

Marriage with Grace
Graham developed cancer and met his wife Grace, a chemo nurse while undergoing treatment. (TV: The Woman Who Fell to Earth) When he told Grace he was a bus driver, she remarked that he ought not to be like James Blake, who she called "Blake the snake." He learned of her appreciation of Rosa Parks and that she owned a t-shirt that said "The Spirit of Rosa". (TV: Rosa) Once the cancer was found to be in remission, Graham married her and became her second husband. (TV: The Woman Who Fell to Earth)

Meeting the Doctor
Whilst returning home after an unsuccessful session of teaching Ryan how to ride a bike, Grace and Graham were trapped when a swarm of Gathering coils attacked their train in search of Karl Wright, a fellow passenger. He, along with Grace, Ryan and Yasmin Khan, helped the Thirteenth Doctor battle both the coil and its controller, Tim Shaw.

Whilst the Doctor recovered at his and Grace's home, he went around Sheffield to ask if anyone had seen anything unusual. Later, Grace and Graham followed the Doctor's orders to pose as construction managers and evacuate the construction site Karl worked at, so the Doctor, Ryan and Yasmin could rescue him.

However, the gathering coils were still active, with Tim Shaw using them to damage the crane that Ryan and the others were on. Despite Graham's protests, Grace climbed up and destroyed the creature by electrocuting it with live cables. However, Grace was also electrocuted in the process and fell to the ground. Mortally wounded, she died in Graham's arms, after telling him to not be afraid without her. Graham later spoke of how Grace inspired him during their three-year marriage at her funeral and felt guilty that he hadn't died instead.

Sometime after the funeral, Graham helped the Doctor construct a teleporter to take her to her TARDIS. Though he meant to stay behind, he, along with Yasmin and Ryan, were accidentally brought along with her. (TV: The Woman Who Fell to Earth)

Believing the pair to be bonuses in the Rally of the Twelve Galaxies, Angstrom scooped Ryan and Graham out of deep space and transported them aboard her ship.

On Desolation, he found Yasmin and the Doctor, who had been similarly saved by Epzo, Angstrom's rival in what would become the final stage of the rally. The rivals, with the Doctor and her friends in tow, were tasked by Ilin, master of the rally, to race across the planet; the first to reach the finish line at the Ghost Monument would win 3.2 million krin and salvation from planet's hostile surface. The Doctor discovered that the Ghost Monument was, in fact, her TARDIS, phasing in and out of reality. After the Doctor stabilised the TARDIS, Graham entered it for the first time and the Doctor attempted to take him, Ryan and Yaz home. (TV: The Ghost Monument)

Trying to return home
The TARDIS deposited the Doctor and her companions in 1955 Montgomery, Alabama instead of returning them to Sheffield due to large traces of Artron energy. Graham was initially excited about his first journey back in history and expressed a desire to see Elvis Presley playing.

As the only other white member of the group aside from the Doctor, Graham was treated far better than Ryan or Yaz. He defended them from the racism inflicted on them, even coming to Ryan's aid when Mr Steele slapped him for returning a glove to his wife Lizzie.

Graham worked to help ensure Rosa Parks began the Montgomery Bus Boycott, using his knowledge of bus drivers to help. He and Ryan encouraged James Blake to leave his fishing spot on his day off after spreading a rumour of a black boycott.

Due to Krasko's interference, a distressed Graham was forced to take part in Parks's famous moment of defiance by ensuring the bus was crowded enough for Parks to be asked to give up her seat. Graham ultimately became the passenger that Rosa Parks refused to give her seat up to, sparking the boycott. The Doctor later showed her companions a history of Rosa's life and how she would go on to have a lasting impact on the history of the universe by taking them to Asteroid 284996, Rosaparks. (TV: Rosa)

Upon returning home, Graham declined to have tea at Yaz's with Ryan and the Doctor. Instead he returned home, where he imagined Grace was still alive telling him to fix things around the house like she asked. Grieving, he began smelling her clothes despite his vision of Grace telling him it didn't help. Hearing a noise upstairs, he went to investigate, finding an abnormally large spider. Fleeing back to Yaz's, he informed Ryan and the Doctor of what he saw. He joined them to investigate further, giving Ryan a letter from his biological father he found at home; though Ryan took it, he dismissed reading it right away. After the giant spiders had been dealt with, Graham decided to join the Doctor in the TARDIS as he didn't want to just stay in his house and dwell on his grief. (TV: Arachnids in the UK)

Team TARDIS
Graham and Team TARDIS travelled to the planet Gatan, arriving in the City of Radiant Stone in the midst of war. Graham accompanied Ryan on the roofs to see why the city was under attack when they noticed "a flying robot lady" called Sandola Dell flying past. They later witnessed the battle between the destroyers of the city - Tumat and Kraytos - as Sandola reported on it, and upon being spotted, Sandola teleported them to her headquarters at the Freedom Thoughtcasting Network. Graham attempted to phone the Doctor but was unable to, and him and Ryan were left on the station as Sandola went to find the Doctor herself. (COMIC: The Warmonger)

After helping the Doctor halt a war on the planet Lobos between the dog-like loba and human colonists, shortly before leaving in the TARDIS, Graham finally told the joke he had been itching to use about loba being human's best friend. When they attempted to return - to retrieve Ryan’s mobile phone - the TARDIS slipped almost six hundred years into the future, where the planet was now ruled by human zealots, served by slave loba, who derived human superiority over loba from this one joke. Graham was now worshipped as "the Good Doctor" while the real Doctor was forgotten. While agreeing this had to be fixed, Graham felt uneasy as the man in charge whose word was everyone's command but did surprisingly well. Eventually, his intolerance of racism and misogyny caused High Priest Mykados of the Temple of Tordos to denounce him and his friends as charlatans. In the end, the Doctor succeeded in uncovering the lie of the zealots, setting the record straight and brokering a lasting peace between humans and loba. The locals commemorated Graham by naming a bay after him. (PROSE: The Good Doctor)

The Doctor and her team were tasked with preventing the Genesis Seed stored in the secret Vault 13 within the Galactic Seed Vault from falling into the hands of Deadly Nightshade. (PROSE: The Secret in Vault 13)

Graham and Ryan came up with the suggestion of giving Yasmin a cake, balloons and candles for her birthday. (PROSE: Dr. Thirteenth)

Personality
Graham believed if you wanted to know something, you just had to ask a bus driver. He was also wary about rushing into danger. (TV: The Woman Who Fell to Earth)

He seemed upset and hurt that Ryan refused to call him "granddad". (TV: The Woman Who Fell to Earth, The Ghost Monument)

Compassionate and against racism, Graham was greatly distressed by his inability to help Rosa Parks from her destined arrest in 1955, not wanting to be party to such an act. (TV: Rosa)

After Grace's death, Graham grieved by talking about her, viewing it better to talk than stay silent as Ryan preferred. (TV: The Ghost Monument) Struggling to move on from losing her, Graham believed he could find solace by travelling with the Doctor rather than waiting for his grief to consume him while surrounded by memories of Grace in their home. (TV: Arachnids in the UK)

Habits and quirks
While first skeptical of the Thirteenth Doctor's title as the Doctor, (TV: The Woman Who Fell to Earth) Graham grew to use the name, though commonly chose to refer to her informally as "Doc" instead. (TV: Rosa, Arachnids in the UK, The Tsuranga Conundrum, Demons of the Punjab)

Behind the scenes

 * Graham's character profile on the official Doctor Who website, a non-narrative source, states that Graham originally moved to Sheffield from Essex. In The Good Doctor it is stated that he attended school in Chingford, which in the real world is a district of North East London close to the border of Essex.
 * He is the second grandparent of a companion to also become a companion, after Wilfred Mott, although the first step-grandparent instead of a biological grandparent. He is also the third individual to travel in the TARDIS with their grandchild, after the First Doctor and Susan, and briefly Jo Grant and Santiago Jones.