Sky Dragon

Sky Dragon (天空竜) is a rare subspecies of Arch Dragon. Mutated from failed evolution to Wind Dragon.

One particular individual was defeated by Rimuru.

Appearance
Though Sky Dragons look almost identical to their Wyvern cousins, their snow-white scales and dominant atmosphere make them impossible to mistake for one another. They're also considered rather small by the lofty standards of Arch Dragons, being only a mere 5 meters tall and 10 meters long.

In the anime adaptation, they're depicted completely differently to their canonical appearance, bearing an appearance that more closely resembles something like a toy skeleton monster than a dragon.

Abilities
As variants of Wind Dragons, Sky Dragons possess some of their elemental powers. They can command the power of lightning to strike down their foes and unleash deadly sonic attacks. Their overall abilities place them well into Calamity-Rank territory, though they're still a far cry from proper Element Dragons.