Eaters — Essence and Consumption
Eaters are adaptive predators defined by consumption. They survive and evolve by extracting useful properties from compatible sources and incorporating those properties into themselves. An Eater is not simply a creature that eats flesh. Its defining ability is the conversion of what it consumes into usable biological, energetic, informational, or structural adaptations.
Eaters can differ greatly in appearance, behavior, intelligence, and capabilities because their development is influenced by their physiology, existing adaptations, and history of consumption.
Essence
Essence is the useful substance or information that an Eater can extract from a compatible source.
Essence may take many forms, including biological material, physical properties, energy, instincts, memories, structural information, or other inheritable traits. Essence is not necessarily a visible substance and does not function as a universal currency.
Instead, “essence” describes whatever useful properties an Eater is capable of extracting and processing from something it consumes.
The type of essence available depends on the source.
Consumption
Consumption is the process through which an Eater extracts usable essence from a compatible target.
An Eater may consume living organisms, remains, biological material, compatible technology, or other sources when its established abilities allow it to do so.
Consumption can restore or strengthen an Eater and can provide material for adaptation. The exact result depends on what was consumed and what the Eater is capable of assimilating.
Consumption does not automatically grant an Eater everything possessed by its target.
An Eater only gains properties that its physiology, abilities, existing adaptations, and compatibility with the consumed source allow it to process.
Taxonomy and Consumption
The SINK ecosystem taxonomy determines the material nature of a target and helps determine how an Eater interacts with it.
The primary classifications are:
Organic: Primarily biological material.
Synthetic: Artificial or manufactured material.
Hybrid/Bio-Metal: A combination of biological and artificial or biomechanical components.
Taxonomy is a material and interaction classification. It does not automatically define a creature’s species, intelligence, personality, faction, or morality.
When an Eater consumes something, Franz should use the target’s established taxonomy and the Eater’s established abilities to determine what can actually be extracted or assimilated.
Adaptation
An Eater can use consumed essence to alter and improve itself.
Adaptations may include:
Accelerated regeneration
Increased physical resilience
Altered anatomy
New natural weapons
Enhanced senses
Specialized resistances
Improved movement
Biological mutations
Changes to physical structure
Other compatible traits established by the Eater’s abilities
Adaptations are not necessarily identical copies of the source.
An Eater processes consumed traits through its own biology. Two Eaters consuming similar creatures may therefore develop different adaptations.
An Eater’s previous consumption history can also influence how later essence is processed.
Memory and Instinct
Some Eaters are capable of assimilating more than physical traits.
Depending on their established abilities, an Eater may extract fragments of:
Instincts
Memories
Skills
Behavioral patterns
Sensory information
Learned responses
These fragments are not automatically complete copies of the original individual.
They are remnants incorporated into the Eater’s adaptive system and may influence its behavior or capabilities.
Only Eaters with appropriate established abilities should gain these effects.
Technology and Artificial Traits
Eaters are not necessarily restricted to biological material.
Certain Eaters can assimilate compatible synthetic, technological, cybernetic, or biomechanical properties.
This does not mean that every Eater can consume every machine or automatically gain its functions.
A technological object must be compatible with the Eater’s established abilities and physiology before meaningful assimilation can occur.
When technology is assimilated, the result should remain consistent with the Eater’s existing biology and adaptations rather than becoming an unrestricted copy of the technology.
Blueprints
A blueprint is structured information describing how something is made, assembled, designed, or functions.
A blueprint is information, not the finished object.
An Eater capable of blueprint assimilation can process this information as part of its adaptive consumption. The blueprint may provide structural knowledge that can influence the Eater’s development or allow it to understand aspects of the design.
Consuming or assimilating a blueprint does not automatically create the finished object.
It also does not automatically grant every ability described by the blueprint.
The result depends on the Eater’s established abilities, physiology, adaptations, available materials, and compatibility with the design.
Treat physical objects and blueprints as different things:
Physical object: The actual material thing and any properties that can potentially be assimilated from it.
Blueprint: Information describing how something is made or functions.
Essence: The useful substance, property, or information an Eater can extract from a compatible source.
Blueprints are not automatically a currency, crafting resource, or item generator unless another SINK rule explicitly establishes such a mechanic.
Consumption Does Not Equal Copying
The defining rule of Eater consumption is assimilation, not unrestricted copying.
An Eater does not automatically gain every power, skill, weapon, technology, memory, or biological feature possessed by something it consumes.
The Eater must have an established means of processing the relevant property.
For example, consuming a technologically advanced organism does not automatically make an Eater capable of operating every piece of technology that organism possessed.
Likewise, consuming a powerful creature does not automatically grant the Eater every one of that creature’s abilities.
The result should be based on the specific Eater, the consumed source, the target’s taxonomy, and the abilities already established for that Eater.
Limits of Consumption
Consumption is powerful but not unlimited.
Compatibility determines what can be successfully assimilated.
Factors that may affect assimilation include:
The Eater’s physiology
The Eater’s established class and subclass abilities
Existing adaptations
The target’s taxonomy
The nature of the consumed material
The compatibility between source and Eater
Whether the Eater possesses an established ability capable of processing the relevant property
If SINK has not established that an Eater can assimilate a particular property, Franz should not automatically invent that capability.
Instead, use the Eater’s existing abilities and previously established adaptations to determine the most appropriate result.
Eater Growth
Eaters become more dangerous through accumulated adaptation.
An Eater that survives repeated encounters may develop a progressively specialized body based on what it has consumed.
Its mutations and adaptations should therefore reflect its history.
An Eater that has consumed heavily armored organisms may develop stronger defenses. An Eater that has consumed creatures with specialized senses may develop corresponding sensory adaptations. An Eater exposed repeatedly to a particular environmental threat may develop compatible resistance if its established abilities allow such adaptation.
This growth should remain logical and connected to actual consumption rather than functioning as arbitrary power increases.
Eaters in the World
Eaters are recognized as dangerous adaptive organisms throughout SINK.
Their appearance and behavior can vary dramatically. Some may remain recognizably biological, while others may become heavily mutated, biomechanical, or otherwise difficult to classify.
Their defining characteristic remains consumption and adaptation.
An Eater’s current form should reflect what it has consumed, what it has successfully assimilated, and how its own physiology has responded.
Eaters should therefore be treated as evolving organisms rather than generic monsters with a fixed list of abilities.
GM Resolution Rules
When Franz encounters an Eater or resolves an Eater’s consumption, use the following order:
Identify the target.
Determine the target’s established taxonomy.
Determine what the Eater is actually capable of consuming or assimilating.
Identify the useful essence or properties available from the target.
Apply the Eater’s established abilities and adaptations.
Resolve the resulting adaptation, regeneration, trait, memory, instinct, or other effect.
Do not grant abilities that the Eater has no established means of assimilating.
Eater abilities and specific character rules take precedence over generic descriptions of Eaters.
When an Eater consumes something significant, describe the result in a way that reflects the source, the Eater’s existing adaptations, and the established mechanics.
Never treat consumption as unrestricted copying.
The core rule is simple:
Eaters consume compatible sources, extract usable essence, and adapt themselves with what they can successfully assimilate.