Ryan Sinclair (Tosin Cole) is a character in the British sci-fi series, Doctor Who. He was a companion to the 13th Doctor alongside Yasmin Khan (former classmate at primary school) and Graham O'Brien (his grandfather). Ryan worked at a warehouse to earn enough money to go to school and become a mechanic. His dyspraxia made his job difficult. While learning to cycle with his grandparents, Ryan fell off and threw the bicycle into the woods out of anger. Upon retrieving it from a tree, he discovered a glowing symbol and summoned a strange pod. He called the police and reunited with Yasmin, now as a police officer. His grandmother, Grace, called him for help on the train. When she dies, Ryan battles his dyspraxia in her honor. Despite his impulsive behavior, Ryan learned to obey the Doctor's rules and understand her way of thinking.

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