The Wyrms of WoF
Ladies and gentlemen.
In Wings of Fire.
A subspecies of dragons.
That, instead of having wings,
they instead developed a third pair of legs.
“Nowings”. Or “Wyrms”.
They wouldn’t even be considered dragons by the other seven tribes. Wyrms would be hated/feared for their bizarre physiology.
Fortunately, Wyrms are VERY good at keeping to themselves. Because they’re subterranean.
Their scales would be different shades of grey, or very dark brown. They
would closest resemble Mudwings, for their irregularly shaped heads
(which are suitable for burrowing), and for their extremely strong
muscles (also suitable for burrowing).
Their snouts would closely resemble mudwing snouts for their flat shape,
but the tops of their heads would come to a long, sharp point. A
single, diamond-hard horn, developed for piercing and pulverizing stone.
(Think of a Blue Dragon’s horn from DnD (or more simply, a cross
between a rhinoceros horn and a unicorn horn))
Their eyes would be small and dark because of the lack of light.
However, despite their slightly monstrous appearance, they are an
advanced race. More advanced than the dragons that live on the surface.
They would not breath fire, but instead they would have enhanced vocal capabilities, allowing them to unleash supersonic bellows of concussive proportions. High-power bellows would be used to loosen stones at close range, and low-power bellows would be used for underground navigation. Wyrms use their bellows for echolocation (and temporary, long-distance communication).
The Wyrms have a vast network of underground tunnels interconnected
beneath the continent. Their community is so massive, it qualifies more
as a nation than one of the above-ground kingdoms.
The nation of Subterranea. More economically and technologically
advanced than even the old Nightwing kingdom.