the monster with Specium Ray. : A crystal-like monster that previously remain dormant in Antarctica, it has the ability to crystallize its targets. Once awakened, Prizuma attacked various sources of artificial lights such as ships and lighthouses but assimilated with the sunlight during the day. Jack's attempts to fight it was futile as the monster undid most of his attacks. MAT devises a plan to use a stadium as a bait and freeze Prizuma in the same temperature as Antarctica. Jack dived into the monster and destroy it from within using Specium Ray, causing Prizuma to break into pieces. Space monsters : The first space monster in the series, born from an explosion in Crab Nebula. After devouring the MAT Station and Kaji's entire crew with it, Bemstar targeted various gas tanks on Earth to consume hydrogen, helium and nitrogen. Due to its mouth and beak, the monster is capable of absorbing energy attacks that forced Jack to eventually receive the Ultra Bracelet from Ultraseven. With it, he uses the Ultra Spark to slice Bemstar's limbs and head, finally avenging Kaji and the MAT Station staff members. : An elephant-like monster with its body composition consist of neutrons, hence the ability to turn invisible, intangible and teleportation. Its long trunk can be used as a choking weapon. The monster arrived on Earth as a meteor and grew itself after crushing Jiro's school. At night, MAT discovered the monster's ability to turn invisible and its body composition. Jack fought the monster on the next day by exposing its invisibility and using Ultra Super Ray to defeat Sartan. : An ionosphere-inhabiting space monster that devour radio waves from its back. In addition, it can fire beams from a pair of red eyes, its yellow eye can act as a television camera to an entire world's television and unleashing 500,000 volts of electricity. In order to lure Beacon away, Go proposed the plan for Tokyo to shut down their electric waves while Ueno in MAT Arrow 1 serve as the bait, but the plan fail when a boy named Tsutomu communicated with his faraway friend, causing Beacon to target his home. Jack fought the monster and kill it by throwing his Ultra Bracelet to Beacon's face. : A crab-like space monster from space that fly with the speed of Mach 6. Despite having weapons such as a pair of pincers and bubbles, its