Demetrius Demeter was a gifted evangelist and the undershepherd of an underground church in Greece. Lukas Miklos and his wife were members of that church during the Tribulation. Demetrius and Laslos helped Rayford Steele elude the GC in a stopover in Greece after Rayford attempted to assassinate Nicolae Carpathia. While giving Rayford shelter for the night, Demetrius counsels Rayford on his guilt about the assassination attempt and the anger Rayford had been feeling for quite a while. They even put him with a non-English speaking beliver, a man named Adon, to change Rayford's appearance so he could further elude the GC on his way back to the United North American States.