Amon  

Master of the Taiji Dragon Fist (太極龍拳 Taikyoku Ryū Ken?) and the founder of Cassandra, a city located in the western Kanto region. In order to defend his city from invading forces, he fortified his entire city with traps. However, the traps were so elaborate that many of Amons own people, including his own son Xenos (ゼノス Zenosu?), were killed by them. Eventually the Dragon Emperors Army lost their morale and abandoned Amon, leaving only his younger twin brother and former General, who continued supporting Amon out of pity.