Genasi are a rare elemental folk, occasionally born to Eladrin.
Many scholars theorize that Genasi are the result of corruption from the corpse of a Primordial seeping into the people living in the surrounding area.
As long as a Genasi child is born healthy and its parents remain unharmed, it is treated much the same as any Eladrin child, albeit more carefully to accommodate its elemental nature.
Other races have even more limited experience with the Genasi. Some fear them as they would fear the archons of the Primordials, while others are intrigued by the magics that are woven around them.