Bone Crushers

Beaked, carrion-eating posthumans who reached a medieval level of technology before going extinct.

• Excrement Statement: Inverted: In their culture, defecating on someone was an expression of endearment.

• Medieval Stasis: Discussed in the case of the Bone Crushers: their dependence on carrion as a primary food source severely limited their population, and as a result they couldn't progress past a medieval level of society before their civilization collapsed.

• Posthuman Nudism: They rarely wore clothes unless it was cold.

• Scary Teeth: Their teeth fused into beaks. The Qu originally altered their ancestors to be small and birdlike pets.

• Scavengers Are Scum: Zigzagged with the Bone Crushers: they're ugly, ogre-like post-humans who smell bad, eat nothing but carrion, and express their affection by defecating on others, but the narration notes that they were also one of the first groups of posthumans to redevelop sentience and that their strange habits only seem disgusting to us because of our prejudices.