Board Thread:Speculation House/@comment-162.203.244.171-20130726023326/@comment-26019879-20150315211845

Ultimately, it doesn't really matter what they look like. He's a faunus. And as for all faunus having visible traits, that's not true. Tukson had retractable claws, so it's not too much of a stretch to think Adam has some other hidden trait.