Meridian

AX.GAT.06.06 - Meridian

Supplemental

"I can hear the hull thinking. Not the way you mean. I mean the stress patterns, the microfractures, the places where the pressure is wrong. The terminal is always talking. Most of you just can't hear it."

Meridians evolved in the crushing pressure zones of a gas giant's upper atmosphere, an environment with no fixed surface, no discrete horizon, and electromagnetic conditions that would scramble the navigation systems of most spacecraft. They adapted by becoming, essentially, living instruments. Their biology processes pressure gradients, electromagnetic fields, and atmospheric chemistry as primary sensory data rather than background noise. They are partially translucent, in sufficient light, their circulatory system is visible as a faint glow beneath skin that tends toward blue-grey or violet tones, and the glow brightens with physical exertion or emotional intensity. This is involuntary, mildly inconvenient, and generally less dramatic than the Velhari's bioluminescence.

Coming aboard Astraeus Terminal required significant physiological adaptation for the first Meridians. The station's standard atmospheric pressure and electromagnetic environment are not their native conditions, and early Meridian immigrants required a medically monitored transition period that took months. Current Meridian residents have either adapted biologically over generations of station life or use low-grade medical support to manage the difference. Neither option is entirely comfortable; most Meridians simply consider mild chronic discomfort the cost of living somewhere interesting.

Their homeworld did not prepare them for void space, the electromagnetic conditions inside the Ki Nebula produce a sensory experience that early Meridian explorers described as being in a room where the walls were screaming. Over time, some Meridians have adapted to this as well; the nebula's electromagnetic signature is now a navigational reference that Meridian pilots can read as instinctively as other species read star charts. This capacity makes them exceptionally valuable to the Survey Corps and the station's navigational infrastructure, which the factions have noted and are exploiting with varying degrees of subtlety.

In the World

Meridians occupy navigational and structural roles aboard the Terminal with a naturalness that is sometimes mistaken for contentment. They are good at what they are good at, and the station needs what they provide. This alignment of capability and demand does not mean Meridians are satisfied with how that demand is managed. Survey Corps deployment schedules for Meridian pilots run longer than equivalent schedules for non-Meridian personnel. Structural assessment assignments disproportionately pull Meridian sensory capacity. The word that circulates in the Meridian community is useful, used the way a tool is useful, not the way a professional is useful, and the resentment attached to it has been building for years.

Meridian community life aboard the Terminal organizes around what they call pressure circles, groups of six to fifteen individuals who maintain regular physical proximity, not for governance but for sensory calibration. Meridians who spend too long without proximity to familiar pressure signatures experience a mild dissociation, a difficulty locating themselves in space, that they describe as floating unmoored. The circles exist to prevent this. Outsiders who understand this sometimes become part of extended circles themselves; the inclusion is offered carefully and meant sincerely.

The Ki Nebula is not just a navigational fact for Meridians; it is an ongoing sensory event. Meridians aboard the Terminal's outer rings can feel the nebula's electromagnetic presence the way other species feel weather pressure changes. Several Meridian philosophers have written about this at length. Several Meridian children born on the station have never experienced the absence of that sensation and find the prospect of being elsewhere unsettling. This creates a community that has, perhaps more than any other lineage on the Terminal, come to think of the nebula as part of home.

Lineage Mechanics

Health Modifier: +1 (Applied at character creation and each time Fortitude is increased through XP advancement.)

Design Note: A modest Health bonus reflecting the Meridian's biological adaptation for environmental pressure. They are not significantly more durable than standard in combat; their resilience is environmental rather than interpersonal. The +1 is correct; it reflects genuine toughness without placing them in competition with the Gorrathi's tanking function.

Cultural Talent: Notice 1D This die is free; it does not come from the Talent generation budget. Meridian sensory processing is instinctive and continuous. They notice things not through attention but through the passive interpretation of constant sensory data. Common Foci: Electromagnetic Sensing, Structural Reading, Void Navigation.

Inherited Perks

Electromagnetic Sense | Sensory Enhancement

Meridians process electromagnetic fields, powered systems, and pressure gradients as primary sensory information, not an additional channel layered over conventional senses, but an equal input. A Meridian walks into a room and knows which systems are powered, which weapons are charged, and whether the structural integrity is compromised, the same way other species know if the lights are on.

Effect: The Meridian passively detects the following within Near range (6–30 ft)
        without a roll:
       , Powered systems (active electronics, running engines, charged weapons)
          and their approximate power level (low, standard, high output)
       , Significant pressure anomalies (hull stress, compromised seals, active
          decompression events)
       , Active electromagnetic broadcasts (communications, jamming fields, sensor
          sweeps)

        When making Notice rolls involving electromagnetic phenomena, structural
        integrity, or navigation in void or nebula environments, the Meridian
        gains +2D.

        Once per scene, the Meridian may focus their sensing as a Primary Action
        to attempt a detailed structural read of their current compartment or
        vessel section. The GM provides one specific structural or systems fact,
        the location of a fault, the output signature of a hidden active system,
        the stress point in a hull section; that would not be apparent to
        standard sensory capability.

Activation: Passive (general detection); Primary Action (detailed read, 1× per scene)
Scope: Near range (passive); Current compartment (detailed read)
Recovery: Per scene (detailed read)
Genre Note: The passive detection is environmental awareness, not combat
            intelligence. Knowing weapons are charged tells the Meridian
            something is about to happen, not who is holding the weapon.
            The +2D bonus is significant in navigation and structural contexts,
            Meridians should feel like the best in the party at reading the
            physical environment. The detailed read is a narrative tool for
            investigation and scenario engagement.

Pressure Adaptation | Environmental Resilience

The Meridian physiology was built for environmental variance. The specific variances it was built for don't fully align with the Terminal's challenges, but the adaptive mechanism transfers.

Effect: The Meridian reduces damage from pressure-based sources (decompression,
        crush damage, pressure wave effects) by 3 before applying to Health
        (minimum 0).

        In zero-gravity environments, the Meridian does not incur the standard
        Disadvantage that other species face on physical rolls when unaccustomed
        to zero-g. They move in null gravity as naturally as in standard gravity.

        The Meridian's circulatory glow is visible at Close range (0–5 ft) under
        dim light, and at Near range under darkness, brighter under physical
        exertion or intense emotion. This is not mechanically equivalent to the
        Velhari's bioluminescence liability; the glow is subtler and not
        routinely legible to species without relevant sensory training. However,
        at Close range in darkness, a trained observer may notice it.

Activation: Passive
Scope: Self
Genre Note: Zero-g familiarity makes Meridians valuable in EVA scenarios
            alongside Gorrathi, who provide vacuum tolerance. A Meridian-
            Gorrathi pairing for hull-exterior work is the most capable in
            the catalog. This is an intentional design, specialists
            complement each other. The glow is a mild liability noted
            for completeness; GMs should not treat it as equivalent to
            the Velhari's more significant luminosity complication.

Power Access

Meridians have no built-in Power Access, but strong natural affinity with Void Attunement, their electromagnetic sensitivity creates a pre-existing relationship with the sensory register that the Void Attunement tradition formalizes. A Profession that grants Void Attunement provides it at 2D rather than 1D for a Meridian (the standard affinity upgrade). Meridians may access other traditions through Profession or Track with no lineage bonus.

Affinity Note: When a Meridian's Profession grants Void Attunement, they receive
               the tradition at 2D rather than the standard 1D. Their existing
               electromagnetic sensitivity provides a foundation that does not
               need to be built from scratch. This affinity does not stack with
               other Void Attunement access; it is a starting point, not a
               multiplier.

Attribute and Talent Caps

Standard caps apply. No cap increases.

Context	Maximum Value
Attributes	5D
Talents	5D
Foci	3D

Roleplaying the Meridian

The Sensory Constant

Meridian players should think about what it is like to continuously process the electromagnetic environment as sensory data. The Terminal is never silent for a Meridian, there is always the hum of systems, the signatures of powered gear, the stress patterns in the hull. In the Ki Nebula sectors, this input becomes significantly more complex. Decide whether your character finds this overwhelming, background, or a source of comfort, it defines their baseline relationship to the station's environment.

The Pressure Circle

Define your character's pressure circle: who they maintain regular proximity to, whether this is other Meridians or has expanded to include non-Meridians, and what the stakes of losing circle proximity would feel like. The circle is the Meridian's primary social structure and often the most important set of NPCs in their story.

The Useful Problem

Meridians exist in a setting that needs their capabilities and has not always distinguished between professional respect and resource extraction. A Meridian character has a relationship to this reality, whether they've found an arrangement they find acceptable, are actively navigating its complications, or have made the decision to make their capabilities available on strictly their own terms. No Meridian aboard the Terminal is unaware of the dynamic; they just respond to it differently.

GM Notes

Passive detection in play: Don't make the passive EM sensing trivial or overwhelming. It provides awareness, not analysis, the Meridian knows weapons are charged, not who's holding them; knows a seal is compromised, not where the breach will be. Use it to give them relevant environmental information in every scene rather than saving it for dramatic revelations.

Void Attunement affinity: When a Meridian takes a Profession that grants Void Attunement, note the 2D starting point. This makes a significant mechanical difference in early play and reflects the Meridian's pre-existing sensory foundation. Track this clearly.

Nebula scenarios: The Meridian should feel demonstrably different in nebula-adjacent content, their sensitivity to the electromagnetic environment of the Ki Nebula is a setting-specific advantage. Build at least a few scenarios that specifically reward Electromagnetic Sense and navigational capability.

Quick Reference

Lineage Element	Value / Details
Health Modifier	+1
Cultural Talent	Notice 1D (free; common Foci: Electromagnetic Sensing, Structural Reading, Void Navigation)
Inherited Perk 1	Electromagnetic Sense, passive detection of powered systems, pressure anomalies, EM broadcasts Near; +2D Notice in relevant contexts; detailed read 1×/scene
Inherited Perk 2	Pressure Adaptation, reduce pressure damage by 3; zero-g familiarity (no Disadvantage); mild circulatory glow
Power Access	None built-in; Void Attunement affinity, if Profession grants Void Attunement, receives it at 2D
Cap Increases	None, standard caps apply