Spectra Phantom, born Keith Fermin, emerged from the Vestal royal family as the son of Clay Fermin and protective older brother of Mira Fermin. Disguised under a red voice-modulated mask and a feathered leather coat, he commanded the Vexos—King Zenoheld’s elite force—while pursuing technological supremacy for his partner, Pyrus Helios. Their relentless experiments birthed Cyborg Helios and Helios MK2, fueled by Spectra’s tactical ruthlessness and willingness to exploit forbidden ability cards, endangering Bakugan souls to achieve dominance. His calculated manipulations extended to allies and enemies alike: coercing Dan Kuso by threatening Runo Misaki’s safety, leveraging Gus Grav’s loyalty, and masking his identity even as his sister Mira confronted him. Forced to unmask during a duel, Keith’s revelation of their sibling bond fractured his Spectra persona but not his resolve. Framed for the collapse of Vestal’s Dimension Controllers by the Vexos, he was exiled, redirecting his cunning toward the Resistance to dismantle Zenoheld’s regime. Though allied with rebels, Keith clashed repeatedly with Dan, testing Helios’ evolving power while grappling with residual ruthlessness. A decisive defeat stripped him of his Spectra alias, anchoring him to the Resistance. He aided New Vestroia’s evacuation during the Bakugan Termination System crisis, confronted his father’s unethical experiments, and later embraced the Darkus attribute alongside Helios—now Darkus Infinity Helios—to battle Mag Mel’s Chaos Army in interspace. Keith’s evolution mirrored Helios’ transformations: from weaponizing stolen Battle Gear to respecting Bakugan as partners. His appearance shifted from Spectra’s red-and-black intimidation to Keith’s casual pink-haired visage, later adopting a torn, purple-lined Darkus ensemble. Loyal yet sharp-edged, he balanced strategic ferocity with protectiveness toward Mira and remorse over past deeds. His rivalry with Dan, mentorship of Gus, and fractured ties to Clay Fermin underscored a journey from royal heir to exiled warlord to redeemed warrior—a figure forever marked by tactical brilliance and the shadows of his former self.