Verger (The Time of Angels)
Berger was a cleric in the service of the Church in the 51st Century
He was one of the twenty clerics under the command of Father Octavian who were investigating the crash of the Byzantium. Upon arriving on Alfava Metraxis, the clerics realised that they could not enter the ship to neutralise the Weeping Angel inside it as they would be too close to the radiation spilling out of the ship. As an alternative, Berger was placed in charge of laying explosives at the base of the cliff behind which lay an Aplan Mortarium. Berger's team managed to clear a path into the motarium and stayed behind while the others went in with the Doctor to find the angel. He survived the incident with the Time Field and helped to rescue the Doctor, Amy Pond and River Song from the ship before leaving with his fellow clerics and River Song. (DW: The Time of Angels).
Berger's name was only mentioned once when Octavian asked him how he was progressing with the explosives. Apart from that no other mention is made of him.