Drago is Dan Kuso's Guardian Bakugan and the Bakugan main protagonist of the Bakugan Battle Brawlers anime series. He serves as a battle partner, a guardian, and a source of wisdom. Although he is impatient and a pacifist, he wants to help Dan protect Earth and Vestroia. He is the direct descendant of the Original Dragonoid, one of the two first Bakugan ever created.
His real name is Salamander. In the Japanese version, Wavern sometimes calls Drago by his real name when they meet.
A young Dragonoid, nicknamed Drago, is the leader of the Bakugan, with strong convictions and morals, and is one of the most powerful Bakugan living in Vestroia. He has the ability to radiate intense heat from his body in battle dissolving everything around him and is equipped with high intelligence. He is limited in battle mobility but compensates for it through powerful strikes. In Bakugan: Gundalian Invaders, it was revealed that Dragonoid was one of the first Bakugan born and Drago is the current descendant of the original Dragonoid.
Like all Dragonoids, Drago has the power to evolve. As Delta Dragonoid, his horn faces forward with smaller horns on his face giving a cobra-like look, and a grey crest on his chest. He also received a power boost, increasing from 400 Gs to 450 Gs. His new attacks include the Ability Card D-Strike and he gains a Fusion Ability called D-Strike Extreme. He evolved into this during Dan's battle with Julio, Chan Lee and Klaus von Hertzon. During this battle, Drago became encased in a giant rock with cooled and flowing lava inside. Unlike other Dragonoids, however, Drago possesses the Ultimate Warrior Gene, which he had inherited from his ancestor, Genesis Dragonoid.
After Drago evolves into this Bakugan, he looks similar to Infinity Dragonoid, but without the diamond. His power went from 450 to 550 Gs. His new attacks are Exceed, Ultimate Dragonoid. While he would've evolved into this during Dan's battle with Apollonir, Apollonir then stated that to evolve into this, Dan must defeat all of the other Battle Brawlers. He actually evolved after Dan's brawl with Shun.
When Wavern gives the Infinity Core to Drago, he turned into Infinity Dragonoid. He gains an enormous power level of 1000 Gs, and also has a diamond-shaped gem on his chest. Upon gaining the Infinity Core, he could use all of the elemental attacks, and the combination ability, Dextra Attack.
Drago once again appears in Bakugan Battle Brawlers: New Vestroia, this time saving the other Bakugan from the Vexos. This form is a "downgrade" since The Legendary Soldiers of Vestroia had to separate him from the Perfect Core to give him a body. In this evolution of Drago, he has four Perfect Core Ability Cards. His Bakugan Trap is Scorpion. His G-Power is 400.
After Dan lost Drago to Spectra, Spectra took the opportunity to use a Forbidden Ability on Drago, stripping Drago of his will and forcing him to use more of the Perfect Core's power than he should, which caused his body to begin disintegrating. Dan freed Drago from this form with Apollonir, reverting him to Neo Dragonoid.
When Spectra and Dan were battling, Spectra unleashed Maxus Helios. Dan and Drago had no choice but to use the Mechanical Bakugan they took from Gus and Mira. Drago combined with Spyderfencer, Spitarm, Grafias, Dark Hound, Grakas Hound, and Brachium formed Maxus Dragonoid. His G-Power is 3400, formed from Drago's 400 Gs and 500 Gs from each trap.
To prevent Zenoheld from activating the BT System, Apollonir gave his Pyrus Attribute Energy to Drago, forcing him into an evolution. Cross Dragonoid can combine with Mechanical Bakugan to form Maxus Cross Dragonoid. It is his first evolution that his arms are fully separated from his wings. His G-Power is 700.
Maxus Cross Dragonoid is formed when Cross Dragonoid is combined with Grakas Hound, Dark Hound, Spitarm, Grafias, Brachium, and Spyderfencer. His G Power is 3700.
Drago evolved into Helix Dragonoid when he absorbed all six Attribute Energies from the Bakugan Termination System. His Battle Gear is JetKor, and he has a G-Power of 900.
Lumino Dragonoid evolved into this after Neo Ziperator gave him The Element. His Battle Gear is Explosix Gear. He has a G-Power of 1000.
Blitz Dragonoid evolved into this after he defeated Dragonoid Colossusand Dragonoid Colossus forced him to evolve somehow, so he could better protect the Sacred Orb. However, the true evolution didn't take place until the battle with Dharak, when he and Dan believed in "the power they had together".
Titanium Dragonoid is Drago's previous form. He evolved after he battled Emperor Barodius in the middle dimension, where the Sacred Orb entered him, creating Titanium Dragonoid. In this form, Drago has a harder time controlling his powers, due to Code Eve mutating Dan's Switch Code and Drago's DNA upon his evolution. This brought them out of sync and spawned a Mechtogan, Zenthon, as well as a Mechtogan Titan, Zenthon Titan.
Mercury Dragonoid is a special form of Titanium Dragonoid. Using the power of the Gate and Key, similar to how he shared his powers to make Mechtogan for the other Brawlers, he switched body parts with Infinity Helios and Taylean.
Fusion Dragonoid is Drago's final form in the anime. He evolved by the power of the gate and key during the battle against Mag Mel and Evolved Razenoid. He easily avoided Evolved Razenoid's attacks and was able to defeat him with one powerful blow. He then returns to Earth with Dan and everyone is happy to see them. He is the first Baku Sky Raider Bakugan to appear in the anime and the first Sky Raider Guardian Bakugan. His Mechtogan Destroyer is Dragonoid Destroyer. His G-Power is 1200.
Aeroblitz is a combined form of Fusion Dragonoid and Reptak. His combined G-Power is 2200.
And he is voiced by Peter Cullen in the English dub and will be voiced by Toru Okawa in the first arc (Bakugan Battle Brawlers), Katsuyuki Konishi in the second arc (New Vestroia), and Taiten Kusunoki in the third arc (Gundalian Invaders) and so on in the Japanese dub, as a tribute for Keiji Fujiwara.