Gunz Lazar debuted as a high-level Bakugan City battler ranked below Dan Kuso, Marucho Marukura, and Shun Kazami. He harbored intense animosity towards the Battle Brawlers, especially Dan, aiming to defeat him publicly and claim the title of Bakugan champion. His appearance featured blond Super Saiyan-styled hair, violet eyes, and a gray jumpsuit with red lining. Adopting the identity of Wiseman 2.0 changed his attire to a red jumpsuit and helmet, visually reflecting his inner turmoil and rage; he later reverted by removing the helmet. Personality-wise, he was hotheaded, competitive, self-assured, and often cocky, driven solely by surpassing Dan. His strong initial bond with his Haos-attribute Bakugan partner, Reptak, faced severe strain during his darker phases. Gunz first appeared in a Bakugan City tournament, defeating Marucho and Radizen to reach the finals against Dan. Before their battle concluded, rogue Mechtogan—Coredegon, Slycerak, Exostriker, and Mandibor—intervened, defeating Reptak and causing Gunz to vanish in an explosion, leading Reptak to report him missing. Antagonist Wiseman later impersonated Gunz to infiltrate the Battle Brawlers' headquarters, steal Battle Suits, and frame him. The real Gunz was discovered imprisoned in Wiseman's hideout, awakening during a confrontation that resulted in Balista's death. Despite his attempts to prove innocence, the Battle Brawlers distrusted him due to Wiseman's deception. Betrayal and rage over Wiseman's actions drove Gunz to don Wiseman's helmet, transforming into Wiseman 2.0 with a bright red suit symbolizing intensified fury. As Wiseman 2.0, he partnered with the Darkus-attribute Bakugan Betadron and commanded the ancient Nonets—Kodokor, Mutabrid, Spatterix, Stronk, and Tremblar—forming combinations like Scorptak and Gliderak. He accused Dan of turning Reptak against him, sought vengeance, and abandoned his bond with Reptak. This culminated in a battle against Dan and Drago in the Doom Dimension where he lost. Despite Dan's attempts to reason with him, Gunz only relinquished his Wiseman identity after Reptak persuaded him to release his hatred, marking his redemption and return as a Battle Brawlers ally. Following redemption, Gunz participated in the final conflict against Mechtavius Destroyer. During this battle, Betadron sacrificed himself to provide energy for a time warp, enabling the Brawlers to travel back and prevent Bakugan City's destruction. Gunz initially doubted his abilities in Bakugan, Battle Suits, and Mechtogan, even considering giving Reptak to Dan. Reptak reaffirmed their partnership, and through renewed trust, they created the Mechtogan Chromopod. This achievement demonstrated their synergy and contributed to Dragonoid Destroyer's victory. Later, Gunz and Reptak competed in the Neo Bakugan City Tournament, losing to Dan in the championship, and attended Dan's victory celebration. Throughout his journey, Gunz utilized: * His primary partner, Haos Reptak, with whom he created the Mechtogan Chromopod. * As Wiseman 2.0, partner Darkus Betadron and command of Nonets, forming combinations Scorptak and Gliderak. * Briefly, Combustoid (a Battle Suit Bakugan given by Dan) and participation in the Baku Sky Raider combination Aeroblitz with Dan's Fusion Dragonoid. Trivia notes: His name derives from "guns and lasers," referencing Reptak's weaponry. His visual design symbolizes his Haos attribute (blond hair) and its Darkus opposite (violet eyes). He was Dan's only rival who never defeated him in battle and the sole character in Mechtanium Surge with an episode named after him. His story parallels Sid Arkale's but diverges in survival and redemption.