Louis Wintercrest

Louis Wintercrest (b. 2004) was a companion of the Fourteenth Doctor.

A student of creative writing at St Luke's University in 2022, Louis was already aware of the Doctor's existence, havng listened in on a few of those lectures. After meeting the Doctor's current incarnation and helping fight the Solitude, the Doctor took Louis on as his companion, offering him a unique insight on the universe to inspire his writing. (TV: The Dimension of the Lost)

Childhood
As a child, Louis was bullied for being a bookworm, and was frequently called "Loser Louis". As a result, Louis was motivated to become a writer to show his bullies that liking books didn't make him a loser. (TV: The Dimension of the Lost)

Upon arriving at St Luke's University, Louis attempted to become more extroverted, going to more parties and getting drunk. Disapproving of her brother's carefree nature, happy-go-lucky attitude, and disregard for the consequences, Emma Wintercrest reprimanded him, further making him feel isolated. (TV: The Dimension of the Lost)

Meeting the Doctor
A chance encounter with the Fourteenth Doctor following a meeting with his professor Talia revolutionised Louis' life. Not long after meeting him TBA. (TV: The Dimension of the Lost)

Personality
Louis had a positive view on life, choosing to enjoy it rather than wallow in the despair that everyone else around him seemed to be stooped in. Optimistic and plucky, Louis caught up to the Doctor quickly, and adjusted more easily to TARDIS life. (TV: The Dimension of the Lost)

He could easily be viewed as annoying

Appearance
Louis had soft blond hair, green eyes, a youthful smile, and, according to the Doctor, 'a look of innocence [he hadn't] seen since Amelia Pond.' (TV: The Dimension of the Lost)