Artie Maitland
Artie Maitland[1] was the son of George Maitland and brother of Angie Maitland. After his mother passed away, Clara Oswald became his nanny. He also borrowed the book Summer Falls from Clara. (TV: The Bells of Saint John)
He and his sister discovered images through history of Clara and decided to question her. (TV: The Crimson Horror)
He was taken with his sister to Hedgewick's World of Wonders by the Doctor and Clara. There, he was asked by the Doctor to remain in the room full of statues which Mr Webley had collected throughout his life. He became afraid and when turning the light on, he was attacked and upgraded by a Cyberman. Turned into a zombie of sorts, he was finally released when the Cyberman inside the Doctor's mind, freed him and his sister from the module. After defeating the Cybermen and dropping Porridge off on his spaceship, the Doctor returned Artie and Angie back to Earth, London. (TV: Nightmare in Silver)