The Sapphire Dragon is malevolent, quiet, cunning, and a frightful being of chaos. Yet it did seem to have some bit of respect for its 'fellow dragon,' as it did not try to attack Dojo until Dojo accidentally damaged it. It hesitated and examined the threat level of Dojo, showing that it did, to an extent, have intelligence.
The Sapphire Dragon, true to its name and color, is a very large sapphire colored dragon. A little bigger than Dojo's size. Its entirely appearance is sapphire.
Powers and Weaknesses
While with each new victim its power grew, it seemed to have a limit to how much power it could use at once, as it hesitated before attacking Dojo right after attacking Clay. Its biggest weakness was soot. If covered in soot it will become a harmless bauble, and cannot harm anything. Also, its minions were also affected by soot, gaining a small portion of their free will for mere moments, and were exposed to incredible pain. Also while most of its body was solid sapphire, its under belly was either vulnerable to attack (it wasn't strong enough to defend against Dojo after just two victims), or dragon claws were sharp enough to pierce sapphire and harm the dragon.
The Sapphire Dragon has his own soundtrack, that can be heard when his true identity, as not a simple Shen Gong Wu, is revealed.
The Sapphire Dragon bears a stark resemblance to Qing Long/Seiryu, the Azure Dragon of the East.