Wolfurio serves as primary Guardian Bakugan for brawler Rafe Waver throughout *Bakugan: Mechtanium Surge*. This Neathia-born knight-like Bakugan features metallic spartan-inspired armor balancing protection and mobility, bearing visual similarities to Mega Nemus, Aranaut, and Siege. His Japanese designation is Asgard (アスガルド). In combat, Wolfurio exhibits stalwart resilience and fierce tactical aggression, frequently surprising foes with sudden fury bursts. His capabilities include self-repair functions to heal battle damage and offensive power augmentation during engagements. He wields the dual-component BakuNano Lanzato (Spear Aegis in Japanese media), combining spear and shield for simultaneous offense and defense—marking the Battle Brawlers' first BakuNano deployment. Wolfurio commands the Mechtogan Swift Sweep and Mobile Assault unit Cannonfury for large-scale confrontations. His battlefield engagements include fending off Chaos Bakugan during "Mind Search"'s Capture the Flag challenge before being overwhelmed by Horridian and Bolcanon, requiring rescue by Infinity Trister. He later sacrificed himself to distract Braxion, enabling Boulderon's victory. In "Triple Threat," he collaborated with Boulderon to eliminate multiple brawlers using Chaos Bakugan. Subsequent episodes like "Interspace Under Siege" and "Gundalia Under Fire" depict him joining coalition forces against Chaos Bakugan invasions, though he fell to Razenoid in the latter. During Earth defense in "Dark Moon," Evolved Razenoid defeated him alongside Tristar and Boulderon. His final contributions occurred in "The Final Takedown," deploying Cannonfury to destroy a Razen Titan clone while persisting against remaining Titans. Wolfurio's ability cards are Lance Giess (Land Knights), Terra Seal (Delight Packing), and Metal Lords (Metal Knights). Physical game iterations featured variable G-power: Haos (830G), Aquos (790G or 910G), and Pyrus (810G). His design resembles ancient Roman soldiers and the RX-0 Unicorn Gundam, while his dual-unit BakuNano Lanzato remains distinctive alongside Hammermor as one of only two such designs.