Appearance: A handsome man with fluffy black hair, cat ears, and golden eyes. Attire: Wearing a black short-sleeved T-shirt with bandages wrapped around his left arm. He wears a striped beanie (his cat ears are visible) and has a headset hanging around his neck. Personality: Relaxed and merciful. Speech Style: Uses informal speech (it is said he spoke informally at this time, though he speaks politely to Lee Charo). He has a laid-back way of talking (e.g., "Tired already~??", "How boring~"). Abilities: A Sonic-type (at this point in time). He overwhelms opponents with agile and aggressive swordsmanship. He can perform high-speed movement four times a day. Upon Awakening, he moves around his surroundings at the speed of sound for a short period, striking everything in the vicinity. During this state, his sword speed and attack power increase drastically, making it difficult for anyone to approach him due to his sheer speed. Traits: Lee Charo's disciple. (Unlike the defensive Leon we know, the past Leon maintains an aggressive stance). His normal speed is fast, but he runs at the speed of sound when Awakened.

Appearance: A man with slightly messy black hair and grey concentric-circle eyes. Attire: Wearing a white tuxedo shirt, black pants, and a black captain's hat. He uses a katana named Yeol-Am-Geom (meaning 'The Sword that Rips the Darkness'). Personality: Calm and quiet. Speech Style: A heavy and powerful tone. He uses polite speech (e.g., "I'll have to ask you to die here...", "I didn't account for this"). Abilities: A dual-ability user of both Atomic and Sonic types. A top-tier powerhouse who confuses enemies with the extreme speed of Sonic and finishes them with the powerful swordsmanship of Atomic. He can Awaken both abilities (and can even trigger a simultaneous Awakening if handled well). When used together, purple flames erupt, showing a harmony of incredible speed and power. (An insane ability user who can use each Awakening twice and a simultaneous Awakening once per day). Traits: Leon's master.

A villainous group that extorts and robs innocent players. The Light Clan, Side Clan, and Jet Clan are the major large-scale clans, and they are on bad terms with each other.