Ace, a 16-year-old Resistance fighter in the Bakugan Battle Brawlers, opposes the Vestals’ occupation of New Vestroia with his Darkus-attribute Bakugan partners Percival and Falcon Fly (his Bakugan Trap). Initially distrustful of human allies, he tests Dan Kuso’s capabilities in a battle that ends in a stalemate, forging a rivalry tempered by mutual respect. Sharp-tongued and prone to impulsive remarks he later regrets, Ace balances sarcasm with unwavering loyalty to the Resistance. His combative rapport with leader Mira Fermin echoes the fractious-but-productive dynamic between Dan and Runo Misaki, blending friction with battlefield synergy. Motivated by the Vestals’ exploitation of Bakugan, Ace joined the Resistance, though his past prior to this remains unrecorded. During a pivotal mission to dismantle the Bakugan Termination System, he evolves Percival into Knight Percival, showcasing his strategic growth. Subtle, unspoken tensions with Mira hint at deeper emotional layers beneath his guarded exterior. In combat, Ace employs tactical precision, using Darkus Driver and Tri-Gunner enhancements to amplify Percival’s strength. His mastery of Bakugan Traps and adaptability to evolving battle systems cements his role as a linchpin in the Resistance’s campaign against the Vexos, prioritizing New Vestroia’s liberation above all else.