1. LIAM (The Diver / The Protagonist)

    Archetype: Resilient, driven, blue-collar underdog.
    Visual Age: Mid-20s.
    Appearance: Athletic, broad-shouldered build from years of commercial diving. Sharp, determined eyes. Short, messy, dark hair damp with sweat. A minor scar across his left jawline from an underwater equipment accident.
    Attire/Gear: Wears a heavy-duty, worn-out navy blue tactical diving undersuit zipped down to the waist, revealing a gray tank top. Constantly carries a rugged, waterproof digital tablet clipped to his belt.
    

2. MARCUS TAN (The Seeker / The Historian)

    Archetype: Bookish, emotionally heavy, idealistic scholar.
    Visual Age: Late 20s.
    Appearance: Slender, slightly slouched posture. Kind but perpetually tired eyes hidden behind round, wire-rimmed glasses. Medium-length, unstyled dark hair that he nervously pushes back.
    Attire: Casual, slightly rumpled linen shirt with the sleeves rolled up, dark trousers, and a vintage leather watch passed down from his grandfather.
    Vibe: Melancholic, deeply spiritual, driven by a profound sense of inherited family duty.

 

3. CHLOE TAN (The Corporate Elite / The Antagonist)

    Archetype: Ultra-calculative, high-power corporate shark.
    Visual Age: Late 20s (Marcus's cousin).
    Appearance: Piercing, cold almond-shaped eyes. Sharp, flawless jawline. Jet-black hair cut into a symmetrical, razor-sharp bob. 
    
    Vibe: Absolute authority, terrifying intelligence, values economic progress over historical sentiment.