They are shorter than Shade's humans and taller than trolls.
Ferais run to slim builds, and have medium-to-fine hair (coarser than human, finer than troll) with a distinctive texture. Their ears are rounded, not pointed, with no separate lobes.
Ferais have a goldish or tannish tint to their skin (with some variation by area of origin, as with humans, trolls and goblins). Hair ranges from dark to light brown or from russet to light brown. Eyes can be anything from green to brown, green to blue or grey.
They are not allergic to iron. They are prone to asthma, having strong reactions to the smoke from certain combustions. (Coughing, lungs constricting, eye-watering and temporary damage to the voice are all common symptoms.) Luckily, Shade is never a big fossil-fuel user.
Ferais are known for being standoffish and shy of other species. (This is a generalisation and becomes less accurate as the species associate more closely.)
They are typically fond of the arts; most enjoy music, and very many of them play an instrument or two. Ferais are, on average, the worst of the five races at languages; they do not tend to be big readers, favouring conceptual or practical methods of learning. At a suitable stage in Shade's history, they prefer to live outside built-up areas, and tend to keep a lot of pet plants.
Magical ability is relatively common among ferais, and telepathy is possible but very unlikely (less so than any of the other races).