This article is about a/an monster in Choushinsei Flashman.

The Gostero (ザ・ゴステロ Za Gosutero) is an orca-like Beast Warrior creation of the Reconstructive Experiment Empire Mess.

Character History

A Beast Warrior with two mouths; a larger mouth that opens into a smaller mouth. This smaller mouth spits out a gooey substance that is difficult to remove on its own, particularly for the Flashman due to a celestial alignment of the five Flash planets interfering with their powers and preventing their Prism Flash from activating. With pieces of their bodies stuck with the substance, the team is forced to flee from it and Wandala until the alignment has ended, upon which it becomes easier to remove the goo with their Flash powers and transform once again. The Gostero takes a bombardment of the five prism weapons until a Rolling Vulcan destroys it; after being rebuilt and grown by Kuragen, it is destroyed by Flash King.


to be added

Modus and Arsenal

  • to be added



  • to be added

Behind the Scenes

  • to be added


Community content is available under CC-BY-SA unless otherwise noted.