Albero
From Tardis Wiki, the free Doctor Who reference
Albero was a Colonel aboard the Papal Mainframe. Serving under the Mother Superious Tasha Lem, he was present at the Siege of Trenzalore, and the Mainframe's subsequent transition into the Church of the Silence. He was presumably killed and turned into a Dalek puppet after the Dalek attack on the Mainframe. (TV: The Time of the Doctor)