The Kardas Dragon was a powerful Rahi that served as a mount for Vezon during the Toa Inika's quest for the Kanohi Ignika. When the Toa Inika defeated Vezon and Fenrakk, they plunged into a sea of lava, seemingly to their doom. What the Toa did not know was that the curse that had bound the seventh Piraka to the giant spider would not grant him so easy an end. The Ignika resurrected Fenrakk in the form of the Kardas Dragon, and the Toa had an even bigger fight on their hands. This was the final guardian of the mask that the Toa had to face.

The Kardas Dragon constantly generated a concussive force inside of itself, which it needed to release by breathing it out of its mouth. The Kardas Dragon could use this to attack its opponents with the force of an explosion. This Rahi also shared Vezon's ability to absorb kinetic energy and to survive submerged in lava.