William Yates

William Yates is a protagonist, detective chief inspector, and leader of the task force in "Gods and Monsters".

Before G&M
William Yates is head of the task force that's set up to secretly counter the demons; however, he himself is actually a demon. Immortal, Yates has lived among humans for a number of years, working a variety of different jobs. Having worked with the Krays in the 50's and 60's, Yates enjoyed creating anarchy during this time and began to plot his revenge on the humans who had caused his people so much suffering. Realising his plans needed to work on a larger scale, Yates went into hiding, rebuilding his identity as a reputable citizen, earning his way up to DCI in the Met.

Season 1
Upon finding out about QT's involvement in the zombie outbreak, Yates suspected them of having further involvement than he let on. He insisted on being head of the taskforce to hunt down those of his own kind. By doing this, he fuelled further hatred for the humans, hoping it would cause an all-out war between the universes.