Fake Ultraman Joneus (にせウルトラマンジョーニアス Nise Urutoraman Jōniasu), also known as Ultraman X in the American DVD, was created by the Alien Gilo, it is a robot doppelganger created to draw out the Science Garrison and fool the world into thinking their hero had gone evil.
As Gilos attacked the city, Fake Joneus arrived and chase it off in a staged battle. Not long after, the imposter was again unleashed on Gilos. The tornado kaiju retreated as planned, but the false warrior suddenly attacked the Science Garrison. Choichiro Hikari managed to call forth Ultraman Joneus and the battle between the Ultras began.
The hero fought his doppelganger, both of them blasting each other and smashing one another with titanic blows. As Gilos circled overhead, they both began to fire their Planium Rays. The beam war raged on, each one unable to get the upper hand on the other. After almost a minute, Joneus pulled through and his beam ripped through the fake's. Fake Joneus was blasted apart, its body vaporizing in a gigantic explosion that ripped through its entire being.
- Flight: Thanks to his technology Fake Joneus can fly under his own power.
- Planium X Ray (プラニウムX光線 Puraniumu Ekkusu Kōsen): Despite being a robotic imitation Fake Joneus can fire the Planium Ray thanks to the technology in his arm, however his version was weaker than the genuine article.
|The☆Ultraman Kaiju & Seijin|
|Pigu | Seagra | Spiral | Wanigodon | Red Smogy | Tough Gillan | Tough Gillas | Tough Gillaco | Fire Badon | Combugon | Robot No.101 | Alien Baltan | Mikonos | Dolfiego | Xalome | Hectore | Liquid Monster | Opt | Garadoras | Xyclon | Gellon | Gadon | Goglan | King Moa | Badan | Islanda | Spirit Parasite | Gerada | Janyur | Bedoran | Bader Group | Bagon | Janyur III | Zaanmoth | Zanba | Dragodos | Death Balan | Gibaaroga | Red King | Aboras | Banila | Arstron | Ghostron | Gokinezula | Alien Baladon | Dabaran | Jadan | Jagon | Skeldon | Garbados | Megasaura | Babilar | Gamiba | Imedo Being | Goadarion | Jinario | Groteng | Plazoon | Agujon | Deathpower | Zuma | Gurol | Putgolia | Iddunus | Darantulas | Alien Noa | Hellar | Roygar | Panther | Heller Army | Gumons | Hell Cat | Orolan | Gilos | Gilo | Fake Ultraman Joneus | Hatari | Large Battleship | Dostony | Spader | Caperadon | Alien Scien | Golding | Gedon | Hella Umaya | Heller Fleet | Makdatar|