non-hostile nature prevented the monster from using them. Originally a benevolent monster from the Cancer constellation, Zanika was forced to flee to Earth when Vacuumon prepared to eat its home constellation while forced to possessed the body of an astrologer named . Each time Vacuumon ate a star from Cancer, Zanika went crazy from mourning the loss of its constellation. Jack was forced to amputate both of its arms despite knowing the monster actually meant no harm. After killing Vacuumon, Zanika peacefully returned to its home planet where it regrow its lost limbs. Junko is portrayed by . : A massive creature depicted as a living black hole from the 108th space system. it ate the stars in Big Dipper and Cancer (one of them being Zanika's home planet). Despite its size proportion, Jack was able to tear the monster with Bracelet Needle and returning the stars it had devoured. : A space monster that crash-landed and taken captive by the locals for MAT to conduct their studies. Although they try to burn its remains, Akio picked up a surviving piece that he placed it to his condominium. Kupukupu was restored into a picture on a wall. : Wishing for Kupukupu to become a strong monster, Akio instructed the picture monster to alter its body features into resembling his ideals and rename it Kingstron. However, the monster was materialized in a few days and begins to destroy Akio's apartment. Under the boy's orders, Jack reverses its two horns to halt the monster before throwing his Ultra Bracelet into a flesh-eating bomb, reducing Kingstron to its skeleton. : Originally a microorganism attached to a meteorite from Planet Zagoras and mutated on Earth after it was exposed to a radioactive element. The giant meteorite actually became the very foundation of Aino Village where it started to blast off to outer space as a result of Planet Zagoras' gravitational attraction. After saving Minami and Jamikko with the Ultra Bracelet, Jack killed Zagoras by colliding the monster with said meteorite. : A three-horned beetle that killed clients of a hotel due to their use of electronics with similar sound to its buzzing. After the Sakata siblings capture it, MAT attempted to execute Nokogilin but the insect grows human sized and eventually turned into a monster by the time it reappeared. Once disabling it with Ultra Bracelet, Jack killed the monster with Specium Ray. :