DOCTOR WHO IN DETAIL

Ryan, along wit step-grandfather Ryan Sinclair, was on board the train that the Thirteenth Doctor crash landed in. After helping the newly regenerated Thirteenth Doctor he was accidentally sucked into space and joined the Doctor after his rescue.

After returning to Earth, and fighting the Daleks, Ryan decides to stay behind.

First regular appearance: The Woman Who Fell to Earth

Final regular appearance: Revolution of the Daleks