Animals

Immortal Freedom RPG > Non-player Entities (NPCs)

Animals are organic creatures which breathe oxygen and consume organic material. They are differentiated from other organic beings by their capacity for spontaneous movement and rapid motor responses to stimulation. Animals can be found across multiple worlds in the star cluster, as varied as they are numerous. The civilized species in the star cluster often make use of animals for food, materials, transportation, and services. They are also kept as pet companions. Some animals may be considered characters, though only in exceedingly rare cases.[1][2]

Only one thing truly matters to most animals: survival. Everything they do is driven by their innate desire to survive. Whether it be hunting for food, building a nest, or finding a mate, animals care for little else but for their survival and the survival of their species. While play, companionship, and comfort are certainly pleasurable and worth seeking for animals, their primary concern will always be survival.

Animals come in many shapes and forms. A few of them are listed here, specifically the ones which have unique or interesting characteristics. These categories can be used as templates to create more complex creatures. I would suggest using a random generator, such as RanGen’s species generator, to generate features for alien animals. There is also a generic animal template for animal categories not listed on this page.

Because of the existence of interstellar travel, animal species are rarely limited to one world, and may span multiple worlds due to be introduced. The propagation of animal species includes worlds which haven’t been previously visited by the civilized species of the star cluster, as previous the members of precursor civilizations, like ewoche, would have introduced animal species in their time.[3]

Mammals

A mammal is a vertebrate animal which are characterized by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. Most mammals are intelligent, with some possessing large brains, self-awareness, and tool use. Mammals can communicate and vocalize in several ways, including the production of ultrasound, scent marking, alarm signals, singing, and echolocation. Mammals can organize themselves into fission–fusion societies, harems, and hierarchies—but can also be solitary and territorial.[4]

Reptiles

Reptiles, as commonly defined, are tetrapod vertebrate animals with an ectothermic metabolism and amniotic development. Most reptiles are oviparous with shelled eggs, although several species of squamate are viviparous. Reptiles exhibit some form of cold-bloodedness so that they have limited physiological means of keeping the body temperature constant and often rely on external sources of heat.[5]

Birds

Birds are a group of warm-blooded vertebrate animals characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Nearly all birds have wings whose development varies according to the lifestyle of each species. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds. The digestive and respiratory systems of birds are uniquely adapted for flight. Some bird species of aquatic environments have further evolved for swimming.[6]

Fish

A fish is an aquatic, anamniotic, gill-bearing vertebrate animal with a tough cranium to protect the brain, but lacking limbs with digits. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large, active swimmers can maintain a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays.[7]

Anthropods

Molluscs

Other Animals

Animal Template

Attribute Details
Type Creature
Emotion/Logic Number 2
Targets Closest target
Goals Survive

Animals do not generally attack unprovoked. They only engage in combat if:

Most animals avoid conflict, preferring survival to undue violence. Animals only fight to the death if they’re protecting something or they’re cornered. Otherwise, they flee at the first sign of hostility. Predators usually fight until they’re unstable, at which point they retreat.

Size

An animal’s size relative to their target determines whether certain abilities are effective against the target. Animals also have variable injury capacity depending on their size. Animal sizes are categorized relative to the average size of the members of civilized species, who are medium in size.

Roll 1d6 to get a random size.

1d6 Size Description Maximum Major Injuries Maximum Minor Injuries
6 Gargantuan At least 50x larger 20 20
5 Huge At least 10x larger 10 10
4 Large At least 2x larger 5 5
3 Medium Around the same size 3 5
2 Small At least 2x smaller 1 5
1 Tiny Smaller than a fist 1 1

Actions

Reactions

Level 1 Abilities

Level 3 Abilities

Level 5 Abilities

Level 6 Ability

Tactics

Levels AP
Levels 1-5 3 AP + 1 AP for movement
Level 6 5 AP + 1 AP for movement
  1. Guards, if attacked.
  2. Shouts out for help to their allies.
  3. Moves or scrambles to get away from danger.
  4. Drops awareness or sneaks (level 3+), if they’re not perceived.
  5. Attacks a target, if they have no other choice.

  1. https://en.wikipedia.org/wiki/Animal ↩︎

  2. https://www.merriam-webster.com/dictionary/animal ↩︎

  3. https://en.wikipedia.org/wiki/Introduced_species ↩︎

  4. https://en.wikipedia.org/wiki/Mammal ↩︎

  5. https://en.wikipedia.org/wiki/Reptile ↩︎

  6. https://en.wikipedia.org/wiki/Bird ↩︎

  7. https://en.wikipedia.org/wiki/Fish ↩︎

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Immortal Freedom © 2026 by Allen Christianson is licensed under CC BY-NC-SA 4.0