[HARPIES]

Wild, loud, fierce, chaotic, anarchist.

Warlike but in a playful/mischievous way until truly threatened;
Will go absolutely bloodthirsty feral to protect themselves, their group, their honor, etc. if need be.

Loosely tribal society, shifting groups, blood and/or found families.

Unigender species, default neutral she pronoun, don't have much concept of gender in general.
Some choose to present one way or another after centuries of interspecies coexistance exposed them to the concept (usually those who intermingled with other races more often),
but it's entirely a personal and mostly aesthetic choice to do so or not within their own culture.

Prefer using leftover "junk" and "outdated" technologies if any to build their lives around.
Nomadic wastelander vibes, some have crude magical abilities, rarely formed some small towns/villages but nothing big at all.

Some can be persuaded to work with other groups/races as guards, warriors, etc, though most would refuse to work under others out of pride.

Experimentation by the Golden Crucible led to the development of a "pygmy" species of harpies, smaller and with more of an animalistic and aggressive mind;
Used them to sow chaos among people they wanted to assert dominance over by letting them loose to terrorize people.