Mira Fermin, a 16-year-old Vestal, leads the Bakugan Battle Brawlers Resistance after witnessing Alpha Hydranoid’s torture—a revelation that exposed Bakugan’s sentience and shattered her view of them as tools. Partnering with Baron Leltoy and Ace Grit, she opposes Vestal’s occupation of New Vestroia as a Subterra brawler, wielding evolved partner Magma Wilda and Trap Bakugan Baliton. Her sharp style—short orange hair, silver jacket, blue earrings, and red jumpsuit—later shifts to a white track jacket and blue dress. Born to Professor Clay, creator of the Vexos’ mechanical Bakugan, and sister to Keith Fermin—the masked Spectra Phantom—she battles familial ties. When Spectra’s identity surfaces, she infiltrates the Vexos, feigning loyalty to expose his motives. Her calculated loss against Dan Kuso and Ace Grit destroys a Dimension Controller, showcasing her tactical brilliance. Assertive yet vulnerable, her leadership sparks friction with teammates like Ace, though she earns the original Brawlers’ trust through bold acts: disguising as a Vexos fan to divert guards or sabotaging enemy tech. Her bond with Keith peaks in a duel challenging his ambitions. Though defeated, their reconciliation follows his defection from the Vexos, solidified after their father’s sacrifice. In *Bakugan: Mechtanium Surge*, she engineers Battle Suits, deciphers threats like the Nonets, and pilots rescue missions. Overexertion lands her hospitalized, yet she persists, partnering with Roxtor against foes like Wiseman and Mechtavius Destroyer while monitoring Bakugan energy reserves. Her arc closes with familial healing in *New Vestroia*’s Japanese ending, transforming her from a conflicted leader into a unifying force. She remains vigilant against threats to Vestal and Earth, sustaining alliances with Dan, Marucho, and fellow Brawlers, her legacy etched in resilience and strategic resolve.