kostjaks
Kostjaks is a term that appears mainly in speculative fiction and role-playing contexts to designate a cultural group or species. It is not recognized as a real-world ethnic group or language, and there is no single canonical description of kostjaks across sources. In many settings, the term is used to create a distinct cultural flavor rather than to reflect a specific factual culture.
The name is often constructed with Slavic-sounding elements, chosen for its phonetic rhythm and atmospheric resonance.
In fictional portrayals, kostjaks can take various forms. Some depictions imagine them as a semi-nomadic clan
In practice, kostjaks are used as worldbuilding elements to evoke a particular mood or cultural silhouette
See also: List of fictional peoples, Slavic-inspired fantasy, worldbuilding.