During his membership within the ZAP SPACY crew, he was haunted by the image of the giant buried in the rock and challenged by a mysterious woman named Kate.
A young boy who was originally a student of the ZAP SPACY with affinity for monsters, Io's favorite food is chocolate and his shirt has Nexus' Energy Core symbol.
He appears as a minor character in the original manga but in the Neo installation, Kanegon runs away from a group of aliens that try to claim his Battlenizer without a payment.
TPC Mars base were celebrating his 15 years of his sacrifice and during that same time he was transported into another world where Alien Bat kidnapped the Earth's citizens to empower his Hyper Zetton as part of his invasion.
[11] Asuka/Dyna sided with Team U, humanity's final line of defense but sacrificed himself by petrifying both him and Dyna to halt Cocoon Hyper Zetton's development.
He also played a crucial part in Zero's revival, where he encouraged the resistance of Belial's Galactic Empire to not give up and finally bring forth the true form of the Shield of Baradhi, Ultimate Aegis.
In Mega Monster Battle: Ultra Galaxy, an alternate timeline version of Musashi is an active ZAP SPACY member who was contacted by Hyuga's crew in the Space Pendragon.
With the help of Team U's supervision, Hyper Zetton was finally crippled and sent upwards towards space before the Super Ultraman finished it off and return Alien Bat's Earthling hostages.
However, in Ultra Galaxy Mega Monster Battle: Never Ending Odyssey, the Earth Headquarters commander ordered Rei's imprisonment after deeming him as a hostile alien.
But during that incident, Rei and Hyuga were separated from the rest of the crew and find themselves in Planet Hammer after a black hole absorbed their Gostar Dragon.
After Ultraman Saga killed Alien Bat and Hyper Zetton and returning the kidnapped citizens, Team U decided to observe the Earth again, now with Taiga as their latest member.
The battle reach its end with Rei as the winner, however, he instead picked to defeat Alien Reiblood, not wanting to rule the galaxy with iron fist.
The Reionics's main weapon are Battlenizer (バトルナイザー, Batorunaizā), which capable of taming and summon monsters through a system called MonsLoad (モンスロード, Monsurōdo), with the maximum number is three.
Alien Keel "Grande" (キール星人 グランデ, Kīru Seijin Gurande, 6, 7, 10-13 (NEO)) is Rei's main rival in Never Ending Odyssey.
He has a very odd and funny personality, which hides the fact that he is one of the most dangerous and powerful Reionics, and he would have killed Rei in their first battle had not Eleking cut the link between them.
Although initially an anti-hero, he shows a supportive side to both Io and Ai as the story progresses, to the point of assisting them in their final battle against Reiblood.
The Ultra Brothers (ウルトラ兄弟, Urutora Kyōdai) is a team of six legendary Showa Ultramen that have protected the peace of planet Earth and space.
The Ultimate Force Zero (ウルティメイトフォースゼロ, Urutimeito Fōsu Zero) is a team of giant heroes founded by Ultraman Zero in aftermath of the destruction of Belial Galactic Empire.
The team made their cameo appearances in episode one of Wooser's Hand-to-Mouth Life Phantasmagoric Arc as part of Ultra Series' collaboration with the anime.
[39] Ultimate Lifeform Alien Reiblood (究極生命体 レイブラッド星人, Kyūkyoku Seimei-tai Reiburaddo Seijin, 12, 13 (NEO))[40] was the main antagonist of Never Ending Odyssey.
They are also shown to be less hostile and in fact sought Io's cooperation due to the boy's possession of Battlenizer in exchange for his return to Earth, but eventually massacred by Nackle and Yapool's EX Tyrant.
He reappeared again in Mega Monster Battle: Ultra Galaxy, having salvaged the Giga Battlenizer and released Ultraman Belial in hopes of gaining him as an ally to conquer the universe.
[45][46][47][48] Years later, he is freed by an Alien Zarab and successfully steals the Plasma Spark, allowing him to resurrect the fallen spirits in the Monster Graveyard as his thrall while the Land of Light gets reduced to a freezing wasteland.
His spirit would later on ended up in the Monster Graveyard, possessing the Armored Darkness as a temporary body before he moves on to Zero, intending to monopolize the young Ultra's power until he was successfully expelled.
Created by an unnamed alien race when the fearful Alien Bat had destroyed an entire universe, Beatstar's purpose was to control the planet-sized lifeboat, the Beatstar Celestial Sphere (ビートスター天球, Bītosutā Tenkyū) to another universe but when his creators raged war with each others, he fully viewed organisms as evil creatures and resorted to build an army of robots in a plot to kill all lifeforms.
During the film's climax, when Hyper Zetton was eliminated, Alien Bat combined his spaceship with the monster's carcass, allowing it to be revived in its final stage.
Not content on giving up, Alien Bat fused his spaceship with Hyper Zetton's carcass, reviving the monster in its final stage, Imago.
It was later revealed that these monsters were simply baits and their souls were absorbed by Gurashie as antibody to Zero's attacks before the latter transform into Luna Miracle Zero and expelled the spirits.
The pirates sailed throughout the galaxy, boarding the spaceship Avant-garde (アバンギャルド号, Aban Giarudo-gō) with their giant warrior bodyguard, Glenfire until he left the crew to join Ultimate Force Zero.
After Ultraman Belial established his Galactic Empire, they refused to rebel, given by their pacifistic nature but after the planet was under attacked, Mirror Knight encourage them to join the battle, bringing forth space fighter jets.