Stonn

Stonn was a Sontaran and leader of the Bloomsbury Bunch.

Early life
Believing that the Sontarans were narrow-minded in exclusively using war to dominate others, Stonn believed that capitalism would also be effective and, for this, was exiled to Earth in the 19th century. There, he made the acquaintance of Vella following her awakening and met Tom Foster whilst attempting to re-energise himself using a dynamo in a factory. (AUDIO: A Photograph to Remember)

Foster & Stonn
Stonn was grateful for Tom's assistance and the two entered into a romantic relationship. He introduced Tom to Vella and began a business partnership with him, establishing Foster & Stonn in Bloomsbury and gifting him with a Malampus crystal that he acquired from an alien in Cardiff, suggesting that they use it as a lens to forge spirit photographs. Tom disagreed with him, but the lens created what seemed to be legitimate spirit photographs, earning them a profit and giving Tom the respect that Stonn believed that he deserved.

Stonn gave Jenny Flint a discount for a photograph when he met her and Strax whilst promoting the business. He later found Jenny snooping in the building and learnt from Vastra of the revenants and his and Tom's unwitting role in creating them. He was able to persuade Tom to allow him to destroy the lens in order to stop the revenants, telling him that he should believe in the worth of his own art, and teleported away with him and Vella to avoid the Paternoster Gang. (AUDIO: A Photograph to Remember)

Personality
Stonn did not believe in the usual Sontaran ethic and instead devoted his life to capitalism. (AUDIO: A Photograph to Remember)