A lot of people in the Duelling League have long questioned the meaning behind their existance. Be it a question of their role in the future, the secret of their pasts, or their purpose for fighting. Sync the Tempest takes agonizing over such questions to a new level of obsession to which only a teenager from the suburbs who wears black eyeliner can compare. To be fair, despite Sync's appearance, he is actually quite young, being one of the replicas of the Fon Master of the Order of Lorelei. With a natural talent for Daathic Fonic Artes, Sync was given a position as a masked God-General and never given the chance to full the role of Fon Master. Embittered with his position as 'second place' to the other replicas, Sync took on a cruel and twisted persona, revelling in battle and tormenting his enemies before being stopped once and for all by Luke and the others.

As a duelist, Sync has some nasty tricks. Good speed, status, and increasingly good physical and magical damage make him a force to be reckoned with. Once he reaches 50% and 25% of his health, he can unleash his Mystic Artes Harrowing Gale and Akashic Torment to blow away his opponents.