Telemachon was a Terran-born captain of the Emperor’s Children’s 51st Company, later served Kadalus Orlantir, was defeated and captured by Khayon’s faction, joined Abaddon during the Battle of Harmony, and became the Warmaster’s herald and Fourth of the Ezekarion. His silver mask was forged from a fragment of Sanguinius’s broken sword and reproduces his face as it appeared before its .