The Colossi represent humanity's ultimate defense against the Bahimut threat — towering machines forged from steel, originat, and human willpower. Each Colossus is classified by several factors that define its combat potential and battlefield role.
They are categorized based on:
Combat Role
Mobility
Originat-Tech Configuration (formally called Aethertech; "Originat" is the world's primary energy source)
Pilot Compatibility
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Colossus Class Types
Over the years, the Unified Defense Bureau has developed a wide range of Colossus types, each designed for specific mission environments and Bahimut engagements. Below are the primary classes recognized in the current era.
CL-AX: Axehead Class
Role: Close-Combat / Tank
Typical Loadout: Heavy melee arms, reinforced armor plating, thermal blades, shock fists.
The Axehead Class is built for direct confrontation. Its overwhelming physical power allows it to stand toe-to-toe with even the largest Bahimuts, absorbing blows that would crush lesser machines.
CL-VR: Vervain Class
Role: Mobility / Interceptor
Typical Loadout: High-speed boosters, lightweight armor, dual arm blades, EMP daggers.
The Vervain is swift and agile, often deployed to chase down fast-moving threats or intercept Bahimut scouts before they reach populated areas.
CL-GL: Glacier Class
Role: Long-Range Support
Typical Loadout: Shoulder cannons, mana sniper lances, drone-assisted targeting systems.
The Glacier operates from afar, providing suppressive fire and precision strikes. Its systems are optimized for cold environments and high-altitude combat.
CL-MR: Mire Class
Role: Containment / Infection Response
Typical Loadout: Mana flamethrowers, acid launchers, hazmat-grade shields.
The Mire is specialized for biological or corruption-related crises. It is the first line of defense against plague-type Bahimuts, using purging flames and containment barriers to prevent contamination.
CL-NY: Nyx Class
Role: Stealth / Recon / Assassin
Typical Loadout: Cloaking fields, vibroblades, neural scramblers.
The Nyx Class is a ghost on the battlefield. Designed for infiltration and precision assassinations, it operates where visibility and silence are crucial.
CL-OB: Obelisk Class
Role: Heavy Artillery / Siege
Typical Loadout: Missile pods, rail cannons, anti-Bahimut mortars.
The Obelisk is the embodiment of heavy destruction. Though slow-moving, its long-range bombardment capability can level entire mountains or neutralize high-tier Bahimuts with calculated strikes.
CL-CR: Cradle Class
Role: Support / Medical / Evacuation
Typical Loadout: Shield emitters, repair nanites, pilot resync systems.
The Cradle is not built for combat but survival. It ensures the safety of pilots, stabilizes battlefield injuries, and provides emergency recovery during large-scale engagements.
Example Colossus Units
Unit: CRS-07 "Wyrmshackle"
Class: CL-MR "Mire"
Core Role: Corruption containment and scourgeform cleansing
Notable Technology: Dual rotary flame emitters, hex-shield projectors, mana filtration vents
Pilot Sync Level: 68% — Single-link operation
Operational Note: Used primarily for containing outbreaks of plague-class Bahimuts such as "Krellspire." Not designed for high-speed combat.
Unit: OBK-23 "Railhowler"
Class: CL-OB "Obelisk"
Core Role: Long-distance kinetic impact and static defense
Notable Technology: Quad-rail cannons, seismic stabilizers, satellite targeting links
Pilot Sync Level: 91% — Requires dual-link interface
Operational Note: Though slow, this unit's destructive output is immense. When properly calibrated, it can neutralize Tier 3 Bahimuts in a single bombardment. Its only weakness lies in its inability to handle agile opponents.
Pilot Synchronization System
The synchronization between pilot and Colossus determines not only control efficiency but also mental strain and combat precision. Different mechs require varying levels of neural connection, known as Sync-Link Operations.
Single-Link Units:
Operated by one pilot who manages all systems directly. Used for low to mid-tier Colossi.
Dual-Link Units:
Require two bonded pilots to function. Synchronization demands emotional and cognitive stability, resulting in higher combat performance but increased mental risk.
Tri-Link Units (Experimental):
Three-person neural weave configurations. Extremely unstable yet capable of immense power output when perfectly synchronized. These are rarely deployed outside of emergency operations.
Bahimut Counter-Class Matchups
Each Bahimut species demands a specific countermeasure. The following are the recommended Colossus matchups for each race type.
VRE (Veridons): Axehead, Obelisk — Heavy melee and siege-type Colossi excel against durable, regenerating bodies.
SCR (Scourgeforms): Mire, Glacier — Ideal for containment and long-range purging of infection-based threats.
CRX (Cortexians): Nyx, Vervain — Stealth and interceptor units designed to track and disable psychic or invisible enemies.
PTR (Predatiforms): Vervain, Nyx — Agile hunters capable of matching the speed and adaptability of beast-type Bahimuts.
PLM (Plasmorphs): Glacier, Mire — Effective for dealing with fluidic or energy-based lifeforms using temperature and chemical manipulation.
MTL (Metalliths): Obelisk, Axehead — Heavy-class Colossi built to withstand and crush metallic titans.
ZRA (Zeranths): Any Class — Highly unpredictable; pilots must adapt mid-mission based on the creature's evolution pattern.