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Alien Holosto (ホロスト星人) is an alien that appears in Dinosaur Squadron Koseidon.


Dinosaur Squadron Koseidon

In the 21st century, a group of Archeologists discover an peculiar petroglyph. It has dinosaurs destroying ancient Japanese buildings, along with odd aliens. Koseidon Corps decide to investigate this, and asking Time Mother to determine what time is this happening, and is found out that it was in the Cretaceous period. Princess Altasha also mentions that the Alien Holosto tried to invade the planet she was living in. The aliens have a plan to lure in dinosaurs, then mind control and destroy human civilization in the 21st century. However, this plan is stopped by Koseider who saves the dinosaurs and fights the boss. Alien Holosto boss was equal in sword fight, and when a time bomb came down from the ceiling, Koseider stunned the boss. While the alien was stunned, Koseider jumped up into the sky with bomb, getting himself out, and then dropping back the bomb to the base. When Alien Holosto boss was wake again, the bomb exploded, killing him.



  • Height: N/A
  • Weight: N/A
  • Origin: N/A
Powers and Weapons
  • Mind Control Machine: Alien Holosto have a mind control device that causes dinosaurs to come to their base. It then transports them into another time period where they don't belong, by a volcano.


Dinosaur Squadron Koseidon Kaiju
Princess Altasia | Big Lagee | Futabasaurus | Pteranodon | Brontosaur | Nipponosaurus | Triceratops | Tyrannosaurus | Stegosaurus | Dimetrodon | Corythosaurus | Emperor Godmes | Alien Godmes | Commissioner Zaji | Leader Jericho | General Kesnochi | Shogun Gaban | Sigma-1 | Destron | Galias | Gomer Corps Commander | Demoth | Gibra | Gibras | Killer Dinosaurs | Piragia | Kinokong | Magma Person | Grandon | Baribaa | Tyrannosaurus Jackie | Gaos | Eredon | Doctor Ogimura | Gigi | Dr. Sabata | S-1 | Alien Mosgis | Cyborg K2 | Alien Dakiron | Julie | Cosmo Plums | Cyborg B1 | Dr. Kuroiwa | Cyborg B2 | Cyborg Combatants | Dr. Kuramochi | Franken No.1 | Franken | Alien Devil Akumazy | Evil Samurai | Kishida Gounosuke | Tsumura | Cyborg Guardsmen | Doctor Dark | Phantom Shiraki | Alien Holosto | Nishiyama | Cyborg | Alien Yapu | Aliens | Ragout | Satar | Dr. Munakata | Professor Kisaragi | Bemgan | Kiska | Robot Weapon Nova