Prismantus

is the of the in .
==Characteristics==
 is a three-pronged creature with a large eyeball at its center, and a differently-colored light bulb at the end of each prong, matching the three ' colors. It attacks by spinning quickly in place for a few seconds, then dashing toward the at a high speed. After each dash, briefly spins more slowly, before repeating the attack pattern. The colored light bulbs at its sides are its weak points during this stage, and can only be damaged by the whose tunic corresponds with the bulb's color. As its body is constantly spinning, the must carefully time their attacks to strike the right bulb. After a bulb is struck twice, it will shut off. After all three bulbs are shut off, will be stunned and its spinning halts, exposing its eye. The can then form a of two, and either strike the eye directly, or throw the top on top of its prongs to strike the eye from there. If the eye is damaged enough during this time, the battle will move on to the next phase; otherwise will eventually recover and resume its attack pattern.
In the second phase, the light bulbs turn back on and turns up onto its side, using two of its bulbs as "feet". It begins rolling around the room, occasionally turning to roll toward the nearest or . It will eventually stop momentarily, allowing the to easily strike its light bulbs. As one of its bulbs is usually raised off the ground, this can require the to form a of three to reach it. Shutting off all bulbs will stuns and reveal its eye again. In the third phase, stands up on just one light bulb, and charges a powerful beam that reaches the full length of the . It will fire this beam around the while rotating for several seconds, before continuing to roll toward the again at an even faster pace, eventually stopping to fire another beam. The must again strike its light bulbs to stun it, which will likely require them to form a of three to strike its upper bulbs while it fires a beam. It will be defeated after several more hits to its exposed eye.
==Nomenclature==
's Japanese name is onomatopoeia of the booming noise it makes when it moves. This was the original Japanese name of , but was changed as it fitted better.
 also had several Japanese names during developement, including and Cyclops.