The Wall Guard was a 97-year-old man who guarded the gap in the wall which was the border between Stormhold and England.
He tried to stop Dunstan Thorn from crossing but Dunstan manages to cross. He did stop Tristan until he uses a Babylon Candle to transport himself over the wall. He also witnessed the death of Ditchwater Sal on the other side of the wall which he quotes: "for eighty years I've stopped people from crossing but what I should have been doing was worrying about the people on the other side." This was said after Lamia killed Ditchwater Sal. He is last seen at Tristan's coronation.
He was played by David Kelly.