Jaakor serves as Shun Kazami's primary partner Bakugan in the series' second arc, debuting in episodes like "Evil Arrival". This Ventus-attribute Sky Raider possesses a significant wingspan and armored wing gauntlets, enabling aerial assaults and high-altitude strikes. Early battles saw Jaakor defeated by Drago in the Bakugan Tournament and overwhelmed alongside allies by Mechtavius Destroyer's power. Dedicated training sessions with Shun addressed combat limitations and forged connections with fellow Bakugan Skytruss and Orbeum. When Skytruss and Orbeum urged abandoning human alliances due to Wiseman's actions, Jaakor instead reaffirmed loyalty to Shun after sensing his distress during a conflict with Wiseman's forces. Jaakor demonstrates combat versatility through fusion, combining with Skytruss and Orbeum to form Magmafury against fused opponents, achieving victories. Equipping Runo's Fortatron Battle Suit significantly enhanced defensive capabilities, enabling effective counters against Mechtavius Destroyer and facilitating the summoning of the Mechtogan Thorak in critical battles. Jaakor engaged in numerous conflicts, battling Wiseman's forces, Mutabrid, and Spatterix using Pyrus Combustoid. Despite defeat and banishment to the Doom Dimension during events like "Evil Evolution", Jaakor persisted, participating in the final volcanic confrontation against Mechtavius Destroyer and witnessing Dragonoid Destroyer's victory. Specialized abilities include Fierce Demon - Thunder Clap, Moonlight Shadow Breaker, and Supreme Jet Shot. Combination techniques with Skytruss and Orbeum produce Ultimate Kazami Style - Rapid Fury and the attribute-altering Illusion Stealth Confusion, temporarily switching Jaakor to Darkus while converting allies to Ventus. In physical game form, Jaakor appears across all attributes with varying G-power: Ventus (940/820 Gs), Haos (910/930 Gs), and specialized versions like Aquos Baku Cyclone Strike (1030/1010 Gs). The Japanese name connects to "跳" (tobu), meaning jumping, reflecting mobility. Design notes highlight visual similarities in Bakugan form to Premo Vulcan and Taylean, with a ball form resembling Premo Vulcan and Elico.