The leader of the Dark Matter race. He takes the form of a giant eyeball with a red iris. He has a taciturn and serious personality. He led numerous Dark Matters to encroach upon and corrupt Popstar but was defeated by Kirby, who held the Love-Love Stick, and his ally Gooey. He shoots tears of blood.

A Dark Matter armed with armor and a sword. He is a subordinate of Zero. He invaded Popstar with the ambition of covering Dream Land in darkness but was defeated by Kirby, who held the Rainbow Sword. It is said the reason for the invasion was jealousy of the peaceful Popstar where everyone is friends, unlike his lonely self... When he takes off his armor, he reveals his 'Real Dark Matter' form, which is similar to a normal Dark Matter but with six purple spheres on his back. He has a serious and taciturn personality like Zero but seems to have a strange craving for affection. He is skilled with a sword and fires Dark Lasers.

He attacked Ripple Star aiming for the 'Crystal,' the treasure of the fairy planet. He was later defeated by Kirby, who collected all the crystals. He looks similar to Zero but has a bandage on his head, a halo, and white angel wings with blood vessels at the tips. He has a red iris in the center, which can transform into a :) expression.

He was sealed inside a chest, but Kirby mistook it for a cake and opened it, waking him up. He is a dark purple star with a single pink eye. He is the weakest among the Dark Matters and is always treated as a punching bag. Among his kin, he is relatively active and talkative.

Despite being a Dark Matter, he is kind and innocent. He has no memory of who he is or where he came from. His gender and age are entirely unknown. He lived on Popstar but came to Final Star for some reason. He has a blue body with crossed eyes, is cute and squishy(?), and swings a long tongue. He can mimic some of Kirby's copy abilities like Stone, Parasol, and Burning. Since he is still a Dark Matter, yellow spheres appear on the back of his head and an eye appears when he levitates. He can also fire Dark Lasers.

He takes the form of an icosahedron with red eyes. He can transform into various shapes and use attributes corresponding to those forms. He appears to be a subordinate of Zero2.