Yvonne Hartman

Yvonne Hartman was the administrator of Torchwood in 2007 during the Cybermen incursion and the Dalek conflict. She oversaw the projects that included the Void Ship, as well as the power experiment that ultimately resulted in the Cybermen's invasion. She held a great admiration for the Doctor, however she was confident in the righteousness of Torchwood's actions to the point of fault, ignoring his recomendations and warnings. Only when the end was near did she attempt to stop the experiments, only to have her orders overridden by staff who had been secretly 'upgraded' by the Cybermen.

She was fiercely patriotic, and believed that Torchwood's work was vital to the survival of the "British Empire," and was assured that their work would in fact lead to the restoration of Britain to the status of empire. Ultimately, she was seized by the Cybermen and led off to be 'upgraded', and while she was tear-stricken, she walked into the chamber without coercion, claiming that she "did (her) duty for Queen and Country".

She performed one last known service; even after being 'upgraded' by the Cybermen, her apparent pride and sense of duty was so strong that it overrode the behaviour protocols and allowed her to fend off the Cybermen approaching the top offices, giving the Doctor and Rose time to seal the breach between worlds. She is assumed either dead or trapped with the other Cybermen and the Dalek army in the Void.