The Room Key for the Yellow Aurora Stone opens the door to a chamber filled with numerous Arukoitan, but these are unlike any Arukoitan found anywhere else. Their coloration is green, and they march slowly toward any intruder who enters their domain, spraying a stream of fire when close enough. They are referred to as Jeepkoitan.

Oddly enough there are no Orudakoitan present, but as one might expect from this type of reaverbot, they are being controlled remotely—but by another Arukoitan of all things, this one referred to as Koltkoitan! The master is colored purple, and hides out away from the crowd, sitting still while it transmits its signal. If provoked, it will fight back as it flees. During this time, the green Jeepkoitan cease all motion.