1. Jax "The Iron-Lung"
Role: The Vanguard / Heavy Tank
Background: A former "Tunnel-Rat" for the House of Terra. He was used as a human drill until his lungs collapsed from silica dust. Kael rescued him from a scrap heap, and Sia replaced his respiratory system with Runic Bellows.
Zodiac Affinity: Taurus (Partial)
Signature Mechanic: [Gravity Anchor]
Jax can increase his physical density by 500%. When he plants his feet, even a Tier-3 Calamity cannot move him. He acts as the "Shield" that allows Kael to focus on "The Emperor's Execution."
Personality: Gruff, fiercely loyal, and the "big brother" of the group.
2. Sia "The Weaver"
Role: The Architect / Tactical Engineer
Background: A high-level defector from the House of Azure. She realized that the "Digital Afterlife" was being hoarded by the elites and sabotaged the Spire's secondary cooling system before escaping with stolen schematics.
Zodiac Affinity: Virgo (Latent)
Signature Mechanic: [Light-Filament Construction]
She carries a "Weaving Loom" on her back—a Runic projector that spins hard-light threads. She can build a bridge, a barricade, or a complex cage in seconds. She is responsible for maintaining Kael's Sovereign Vanguard suit.
Personality: Perfectionist, witty, and highly analytical. She is the only one who dares to argue with Kael's strategic decisions.
3. "The Mute" (Rin)
Role: The Scout / Assassin
Background: A survivor of the First Calamity. Rin's voice was "eaten" by a Void-Stalker, leaving them with a "Dead Link" to the stars. Kael discovered that Rin doesn't just make no sound—they delete sound.
Zodiac Affinity: Pisces (Void-Variant)
Signature Mechanic: [The Zone of Silence]
A passive 5-meter radius where no sound, thermal signal, or Runic vibration can escape. Rin allows the team to move through "Static Zones" without being detected by the Azure Spire's satellites.
Personality: Silent (communicates via hand signs or Lyra's telepathy), observant, and protective of Lyra.
The Team Dynamics (Volume 2 Interplay)
The Emperor & The General: Kael handles the "Macro" (The 10-Year Vision), while Sia handles the "Micro" (How to actually build the Bastion).
The Shield & The Shadow: Jax draws the attention of the House of Terra's heavy hitters, while Rin sneaks behind the lines to disable the gravity-emitters.
The Logistic Hub: Lyra acts as the bridge, using her Gemini Dual-Link to keep all four minds connected in a "Neural Hive-Mind" during combat.
Volume 2 Stat Boosts (Year 2 Milestone)
Feature Tier Description
Team Sync Level 1 When the Circle fights together, Kael's Absolute Inertia uses 20% less energy.
The Mobile Forge Active Sia and Bhy Khay have established a remote link, allowing for field-repairs of gear.
Territorial Mapping 15% The team has successfully mapped the outskirts of the Taurus Bastion.