Drago, a Dragonoid Bakugan, serves as partner and guardian to Dan Kuso. As a direct descendant of the first Bakugan, Genesis Dragonoid, created by Code Eve, he carries the Ultimate Warrior Gene. This legacy endows him with exceptional evolutionary potential. Across earlier seasons, Drago ascended through multiple forms: Dragonoid (using Fire Tornado and Boosted Dragon), Delta Dragonoid (gaining D-Strike Attack), Ultimate Dragonoid (employing Exceed), and Infinity Dragonoid (mastering multi-attribute abilities like Dextra Attack after acquiring the Infinity Core). During *Gundalian Invaders*, he evolved further into Blitz Dragonoid and later Titanium Dragonoid upon defeating Phantom Dharak, with Code Eve granting him her powers. This form boasts titanium-reinforced limbs and wings, enabling explosive attacks. Titanium Dragonoid initially grappled with controlling his amplified energy, which endangered Earth during battles. In *Mechtanium Surge*, Drago's uncontrolled power manifested as the destructive Mechtogan Zenthon, appearing during his emotional surges. This forced Dan and Drago into exile for training, starting in abandoned Bakugan Interspace arenas and moving to New Vestroia. During a New Vestroia battle against Preyas and Amazon, visions of Mag Mel and Razenoid caused Drago's collapse, underscoring his instability. A breakthrough came when Drago tamed Zenthon using Revolutional, gaining command over his powers. Synchronization with Dan strengthened after a spiritual encounter with Wavern, whose guidance helped realign their partnership. This enabled Drago to strategically summon Zenthon against threats like Chaos Bakugan and Razenoid. Drago fought alongside the Battle Brawlers against Mag Mel's forces, including the artificial beings Anubias (a Gundalian) and Sellon (a Neathian), who betrayed their teams to serve Mag Mel. During the chaos invasion of Bakugan Interspace, Drago defended the Key, an artifact Mag Mel sought to awaken Razenoid. Despite setbacks—including a damaged escape portal—Drago utilized new abilities like Generation Shield and Wonder Superior, and performed BakuMutation with allies Taylean and Infinity Helios to combat enhanced foes like Razen Titan clones. His evolution culminated in Fusion Dragonoid during the final conflict, wielding the combined might of previous forms and Code Eve's legacy to confront universe-level threats.