I don't know if this has been discussed before, but in the Wax & Wayne books, we hear and see multiple references to "Koloss blooded" people, with blue and natural colored skin. I can't recall an explanation for how a normal person would have Koloss heritage, what with how Koloss are made. Does this imply that Koloss and other hemolurgic creatures can reproduce naturally, as well as with spikes, and certain attributes are passed down genetically? Any theories or ideas about how this is possible, other than someone was adventurous?
And if this was addressed in the book and missed it, please let me know!