02

0² is the main antagonist and true final boss of Kirby 64: The Crystal Shards. It resides deep within Dark Star.

Rather than taking control of Planet Popstar, Dark Matter invades the equally peaceful home world of the Fairies, Ripple Star. While not seen to be producing Dark Matter forces, 0²'s role as the final boss, as well as the battle's location, suggest that it is the intelligence behind these events.

Since Dark Matter's first priority on Ripple Star is the destruction of the Crystal in Ripple Star's palace, it is apparent that Dark Matter and/or 0² knows the Crystal presents at least a credible threat to the plans in motion. It is seen near the end of the game that the reunited Crystal has the capability to purge Dark Matter or related forces from the infected people with a beam of light and relieve them of its possession without the victim receiving a thorough beating beforehand. Comparatively speaking, the Crystal is to 0² as the Love-Love Stick is to Zero. Playing into the fairly clear light and dark themes the game presents, it suggests Zero, 0² and Dark Matter are weak against light from the Crystal at least, as well as certain positive emotions as suggested by the effects of the Love-Love Stick against Zero previously in Kirby's Dream Land 3.

0² isn't encountered until the very end of the game, and only if all 74 Crystal Shards are collected. Unless every shard in the game is collected, Miracle Matter serves as the "final boss." In the bad ending, the existence of another evil force is only hinted when the Fairy Queen suddenly smirks in villainous triumph towards Ribbon as Kirby and friends fly away. However, if all the shards are collected, the fully reformed Crystal blasts the Fairy Queen with a beam of light, knocking her unconscious and revealing that she was being possessed by a massive concentration of Dark Matter, and presumably 0² itself.

Kirby has the Ribbon + Crystal Power Combo during the fight, and Ribbon uses her wings to guide Kirby around. At first, 0² is impervious to absolutely any attack, and fires exploding energy balls at Kirby with decent accuracy. However, 0² can be stunned by continuously shooting at its eye; while it is stunned, Kirby must fly up and aim for the halo. The halo changes color each time it is hit. After enough damage is done to the halo, it disappears, revealing its bandage, which only requires one hit. After shooting the bandage, 0² flips over, revealing a long, green, thorn-like tail on its bottom. This is its weak spot, so Kirby has to shoot it as many times as he can before 0² flips back over and the whole cycle repeats; however, this is complicated by the harmful green gas clouds the weak spot generates. It is also possible to damage 0²'s wings while it is stunned, which will result in it moving much more slowly and make it lose the ability to follow Kirby: if this is done, Kirby can simply move up and attack the halo without bothering to stun 0² first.

After blasting 0²'s tail with a sufficient number of Crystal Shards from the Crystal Gun, the villain explodes, destroying it along with Dark Star and its inhabitants.

And he is voiced by Mike Pollock in the English dub and his Japanese voice is unknown.