Subtitle: Ultraman X (ウルトラマンX Urutoraman Ekkusu)
Under the promise that they would be rewarded 1/3 of Earth for their success, the Alien Gilo group created the Imitation Joneus to stage a mock fight with Gilos. One of these occasions were a countryside which the Scientific Defense Guard investigated. The impostor's appearance shocked Hikari as he initially believed that the previous "Ultraman" sighting were either Elek or Loto. Those fights were actually a ruse to distract the attack team while Alien Gilo were investigating an unused cavern and at the same time testing their Ultraman android's capabilities.
As Gilos attacked the city, Imitation Joneus arrived and chase it off in a staged battle. Not long after, the impostor was again unleashed on Gilos. As planned, the tornado Kaiju retreated while the false warrior attacked the Ultria ship off-guard. 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 impostor. Imitation Joneus was blasted apart, its body vaporizing in a gigantic explosion that ripped through its entire being.
- Prior to its destruction, the red on Imitation Joneus turned blue, probably a discoloration from the real one's Planium Ray.
- In the American DVD jacket, the Imitation Joneus was named as "Ultraman X". The 2013 All Monster Photobook took notice and included it as Imitation Joneus' subtitle.
- Powers and Weapons
- Flight: Thanks to his technology, Imitation Joneus can fly under his own power like the real one.
- Hand Beam: A beam fired from Imitation Joneus' hands.
- Planium X Ray (プラニウムX光線 Puraniumu Ekkusu Kōsen): Despite being a robotic imitation, Imitation Joneus can fire the Planium Ray thanks to the technology in his arm, however his version was weaker than the genuine article.
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