Infinity Trister, also called Tristar in certain media, emerged as a Gundalian Bakugan who ascended to become Marucho Marukura’s guardian partner in *Bakugan: Mechtanium Surge*, succeeding predecessors Preyas and Akwimos. Renowned for strategic agility, he balanced tactical intellect with swift combat prowess. Debuting during Bakugan Interspace’s reconstruction, Tristar exhibited a confident, occasionally impatient demeanor, sparking tensions with allies like Taylean. His fighting style prioritized speed and stealth, leveraging abilities such as Shield Cyclone to dismantle enemy assaults and negate Gate Card effects. Pivotal clashes against Krakenoid, Zenthon, and the Tri-Twisters showcased his cunning deployment of Aquos Mine and Climb Water to secure victory. Evolving beyond raw skill, Tristar mastered advanced techniques—Metal Prowl unleashed blistering energy strikes, while Press Impulse delivered icy, high-pressure blows capable of felling Razen Titans. Through trials against Team Anubias and Mag Mel’s chaos, his bond with Marucho solidified. Loyalty drove him to defend Earth and New Vestroia alongside Drago, confronting threats like Razenoid and Mechtavius Destroyer. Post-Dark Moon crisis, Tristar chose New Vestroia over Gundalia, briefly rejoining battles during the Mechtavius Destroyer conflict. Temporal upheavals rendered his fate uncertain, leaving possibilities of peaceful retirement or reunion with Marucho unresolved. Augmented by BakuNano upgrades like Crosstriker and Accelerak-summoned Mechtogan, his arsenal expanded to include Round Bunker’s defenses and Hold Over’s immobilizing tactics. Transitioning from impulsiveness to disciplined mastery, Tristar’s journey epitomized growth through adaptability, cementing his legacy as a warrior transformed.