This website is where I'll occasionaly dump thoughts about Adnekian and their world. Don't take it too seriously, because I don't either!
Adnekian are humanoids with metal bones and somewhat metallic organs, with the most important one being the Core. It acts as their DNA store, makes grievous injuries possible to recover from, and gives a protective biofield that prevents other Adnekian from meddling too easily. This doesn't even cover how Adnekian are born into one of the four Archetypes - Elementalist, Constructor, Weapon Bearer and Signaller.