Ryan Sinclair is one of the Thirteenth Doctor’s friends, played by Tosin Cole.
Ryan is nineteen years old and has Dysphraxia, a developmental disorder that affects coordination. He is unable to ride a bicycle and his grandmother works with him regularly to teach him to ride until she dies tragically trying to save the world from an alien invasion. His grandmother is married to Graham O’Brien, another of The Doctor’s friends, and he refuses to call him his grandfather.
Ryan is good with social media. He has his own YouTube account called RyanS and chose to search Twitter when asked by the Doctor to look for any unusual recent events.
He is also scared of heights.