Decus is a antagonist from Tales of Symphonia: Dawn of the New World who is part of Sylvarant's millitary group, the Vanguard. Despite his apparently good looks, Decus has sworn to give his heart to Alice alone. Decus, leader of the Vanguard's espionage division, is one of the main antagonists in Dawn of the New World. He does everything Alice does including joining the Vanguard. This character is popular among cosplayers. It can be portrayed by wearing cosplay Decus costume and cosplay Decus wig. This character is always present in a Tales of Symphonia: Dawn of the New World cosplay.