A species of anthropomorphic animal known for dwelling underground or in caves, which bear glowing markings, catlike tails, floppy ears, horns, and clawed paws.

Aside from having exceptional nightvision, a petralyn's eyes naturally have sclerae that are dark in color, as well as glowing pupils that change shape based on emotions. The pupils are round and full by default, and a petralyn can willingly choose to have their pupils appear this way, but they may display another shape in response to an individual petralyn's mood, although shapes have different meanings for each one; for example, a triangle may mean fear for one and joy for another. When using magic, their pupils cover the entire eye. The pupils can also flicker out or even disappear entirely, leaving nothing but the dark sclerae visible.

Originating from the now uninhabitable planet Aeriosis, petralyns are, in fact, aliens. Each one has a special connection to the Aether, a force of pure, concentrated light energy. This connection manifests itself in the form of a spark, which is their life source, taking the place of a heart and circulating light magic throughout their bodies rather than blood. Sparks are the reason why their pupils, blood, blush, and markings glow, and the color of a petralyn's spark directly affects the color of their magic. It may also affect the color of their blood, blush, and pupils, and sparks can be multicolor, although rainbow sparks are exclusive to polychromatic petralyns.
If you see glowing lights in that cave, there's probably a petralyn nearby.
by That One Petralyn Guy January 18, 2023
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