The Crystal Dragon is a high-level monster from Sword Art Online. It can be found on Floor 55 deep within the West Mountain. It is said that to produce a rare mineral called «Crystallite Ingot», which is formed inside its body and can only be obtained in the presence of a master smith.
Is a huge blue dragon with crystal like skin. It stands on four legs but is also capable of standing on two. Its enormous wings allow for high speed flight.