Changes

Spectra Phantom makes his debut brawling against [[Baron Leltoy]] and [[Blade Tigrerra]]. He easily defeated her with Helios and took her to [[Hydron]], who froze her into a statue. This event and Spectra's cruelty would haunt Baron for some time. After Dan and Marucho join the Resistance and begin turning the tide against the Vexos, Spectra was forced to take matters into his own hands. Thus he proceeded to join in on Dan Kuso's on-going battle with [[Gus Grav]]. This caused Dan to struggle until [[Shun Kazami]] came to his rescue, [[Shun Kazami|Shun]] defeating Gus while Dan conquered Spectra. It was after [[Drago]] experienced a massive power surge via Helios's taunts about Tigrerra that Spectra started to show a small hint of betrayal, stating that he wouldn't let the magnificent [[Drago]] become a play thing, meaning that he wouldn't give it to Hydron if he captured it.

Spectra, along with Gus and [[Lync Volan]], trailed after the Brawlers and arrived on Earth through a [[Dimensional Transporter]], taking [[Runo]] as his hostage and offering Dan an ultimatum: join the [[Vexos]] or risk Runo's safety. The Brawlers split up to pursue their foes, Spectra revealing that he is actually against Prince Hydron's rule and wants to team up with [[Dan Kuso|Dan]] to take him down. In a show of good will, he released [[Runo]]. [[Mira Fermin|Mira]]'s suspicion of Spectra being her brother Keith only rose because of this action, as she believed that he infiltrated the [[Vexos]] to free the Bakugan. However, it is learned that Spectra and Gus only wanted to take down [[Hydron]] so that Spectra could succeed the role of ruler of the [[Vestals]]. Meanwhile, [[Dan Kuso|Dan]] refused to believe Spectra's intentions, and [[Alice]] soon warped in using [[Masquerade]]'s warp card. She took Spectra, Gus, and Dan back to the lab, where Dr. Michael sent Spectra and Gus back to [[New Vestroia]]. Unfortunately, the transporter needed to be repaired before another trip could be made. This left Spectra, Gus, [[Lync]], [[Mira Fermin|Mira]], and [[Baron]] trapped on Earth. During her time stuck on Earth, [[Mira Fermin|Mira]] battled a stranded Gus on the bet that if she won, Spectra would remove his mask, while Mira would fight with the [[Vexos]] against [[Prince Hydron]] if she lost. Mira planned on fighting Spectra himself, but Gus intervened, and Spectra allowed it. Mira won, and Spectra removed his mask, revealing himself to be Keith Fermin, much to Gus's disapproval. Spectra left Mira in shock about the fact that her worst enemy was really her brother, Keith Fermin.

Spectra later showed his true colors as a cruel and uncaring person when he activated a Forbidden Ability Card in order to capture [[Drago]]. He was told by an old fortune teller before his battle with Dan that his fate would be terrible if he continued on his chosen path, which he shrugged off. The second time he saw her, she said his fate was worse than before, Spectra shattering her crystal ball in response. He then went on to challenge Dan as planned, the Forbidden Ability allowing him to successfully obtain [[Drago]]. Spectra later used the power of the Forbidden Cards to push [[Drago]] to his limits in his second brawl with [[Dan Kuso|Dan]], the boy seeking to regain Drago from the antagonist. He teamed up with [[Apollonir]] to do so, throwing the Bakugan into Drago's body, thus freeing him from Spectra's grasp. However, Spectra did not seem to be angered at the loss, saying to Gus that he had collected all of the data he needed from Drago, which he later used to create [[Cyborg Helios]].

Spectra later convinced Mira to join the [[Vexos]] and trapped Dan and the others in an electrical cage so they would not go back to [[New Vestroia]]. Unfortunately for Spectra, they escaped and took Dr. Gehabich's Dimension Portal. However, only Dan and Baron could go back, as they were the only ones present with Gauntlets. Spectra helped Mira free [[Shun Kazami|Shun]], [[Ace]], and [[Marucho]] in the depths of [[Beta City]], saying only ''"You are in my debt, Mira", ''while [[Baron]] and [[Dan Kuso|Dan]] were brawling Shadow and Mylene. This gave him a level of distrust among his peers, especially [[Mylene]]. He and [[Clay Fermin|Professor Clay]] upgraded and changed [[Viper Helios]] into the Ultimate Cyber Bakugan. Spectra also battled Mira and came out victorious, forcing her to stay loyal to the Vexos. She later went back on her word by throwing the brawl with Ace and Dan, making Spectra visibly angry for the first time.

Spectra later returned and took on [[Dan Kuso]], [[Marucho Marukura]] and his sister [[Mira Fermin]] in a brawl. Although he defeated [[Marucho]] and [[Mira Fermin|Mira]], [[Dan Kuso|Dan]] eventually went on to defeat him. Spectra later jammed the system that allowed the [[Vexos]] to transport to [[Vestal]] and then went to [[Klaus von Hertzon]]'s mansion in search of the Brawlers. Finding only [[Klaus]] himself present, the two exchanged remarks, and Spectra left. [[Helios MK2]] wanting revenge on [[Cross Dragonoid]], Spectra beamed Dan up into his ship and challenged him to a brawl. However, Dan was victorious once more. Afterwards, Spectra and Gus promised to accompany the [[Resistance]] to the [[Vexos]]' palace. Spectra seems to have a change of heart, referring to Dan as his friend in thanks for enlightening him. He later goes to the Command Bridge and talks to Gus about an anonymous source that gave him information. He reveals shortly that by using data on Bakugan evolution, he planned to bring out even further power from within the Bakugan.

Spectra removed his mask and outer coat, happily reuniting with his sister [[Mira Fermin|Mira]] and reverting to the name of his original persona, Keith Fermin. It was also revealed that Keith had begun to miss his partner [[Gus Grav]], and how Keith had obtained his [[Battle Gear]] was found out. Keith decided to get Dan and Drago a [[Battle Gear]], but to do so, he needed to engage Dan in battle again in order to test if the [[Battle Gear]] in question was right for Drago's body. He put his mask on once more, becoming Spectra yet again. He then challenged Dan and Drago in [[Bakugan Interspace]], finalizing [[JetKor]] as Drago's [[Battle Gear]].

When [[Mylene Farrow]] and [[Shadow Prove]] infiltrated [[Marucho's House]] to get the [[Battle Gear]] and [[Phantom Data]], the [[Resistance]] managed to ambush them. But when [[Mylene]] held [[Mira Fermin|Mira]] hostage, Keith said that he'd give them the data and not to hurt her. He led them to a room, managing to trick them into [[Bakugan Interspace]]. Keith then challenged them to a brawl. He (as Spectra's disguise) and [[Mira Fermin|Mira]] defeated the duo (destroying Mylene's [[Aquos#Legacy|Aquos]] [[Macubass]] and Shadow's [[Darkus#Legacy|Darkus]] [[MAC Spider]]), but when [[Mylene]] tried to send them to another dimension with a [[Death Bomb]], the [[Bakugan Interspace]] collapsed, trapping everyone inside. Keith and his sister [[Mira]] managed to escape, but they were unable to save [[Mylene]] and [[Shadow Prove]].

Despite the Brawlers' plan to leave in the early morning to defeat [[King Zenoheld]] once and for all, Keith left on his own and challenged the King himself in the guise of Spectra, later with the help of [[Gus Grav]], whom Spectra was shocked to see alive. [[Zenoheld]] also revealed the [[Alternative]] Weapon before the end of the battle. At that time, the Bakugan [[Resistance]] arrived, and they will attempt to destroy the [[Alternative]] with the help of Keith and Gus. As the fight continued, Keith and his sister Mira managed to find a way into the [[Alternative]] by blasting a hole into it via Keith's [[Helios MK2]] and his new [[Battle Gear]], [[Zukanator]]. They found their father, who wished to protect his creation. When the others [[Resistance]] members managed to destroy the power reactor of the [[Alternative]], they also managed to escape, but [[Clay Fermin|Professor Clay]] was trapped behind and left behind when he saved [[Mira Fermin|Mira]] from being crushed by falling debris. The group reluctantly returned to the [[Vestal Destroyer]] as the [[Alternative]] blew up with [[Clay Fermin|Professor Clay]], [[Prince Hydron]] and [[King Zenoheld]] either inside or within the explosion's range.

The [[Vestal]] [[Resistance]], along with [[Gus Grav]] bid farewell to the Human [[Resistance]] members as they all returned to their own homes. The [[Resistance]] members all promised they would see the [[Battle Brawlers]] again someday. In the Japanese Ending of Episode 52 (''[[Final Fury]]'' in the English Version) he is shown to live his old life with [[Mira Fermin|Mira]]. She hands him a glass of juice and he receives it happily as she smiles at him.