Osamu, Joe

城治

Personal information:
Status: Alive
Faction: Battle Brawlers
Bakugan:
Main Attribute: Haos
Guardian Bakugan: Wavern (Deceased)
Joe Osamu serves as the webmaster for the Battle Brawlers Bakugan website. He utilizes Wavern and Haos Bakugan. He is hospitalized due to low blood sugar, but he leaves the hospital quickly after his initial appearance.
Season 1:
Joe Osamu originally established the website concerning the Bakugan that fell from the sky. Dan Kuso and Shun Kazami were among the first individuals to register on the site. Dan and his friends suspected him of being a spy working for Masquerade, reasoning that as webmaster he could report their activities to Masquerade. Chan Lee informed them that Joe was in the hospital, so they went there. He found Drago, who had been accidentally dropped by Dan, and while Dan attempted to gather information, Joe merely engaged in idle chit-chat.
Joe requested that they conduct a Bakugan battle for the information. During the brawl, it quickly became apparent that he had never participated in a brawl before, becoming very excited and interested; however, before they could finish their battle, Joe suddenly collapsed. Wavern, a Bakugan holding the Infinity Core, called to him and used Positive Energy to wake him up.
Following that, Wavern became Joe's Guardian Bakugan. Additionally, the group was convinced that Joe was not a spy for Masquerade, since he posted a message on his website advising any brawlers not to fight Masquerade if they encountered him. Joe then became an official member of the Bakugan Battle Brawlers.
While the Brawlers are in the Doom Dimension, he fought Masquerade with Wavern and nearly lost but later won, becoming the first person to defeat him one-on-one. After Dual Hydranoid evolves into Alpha Hydranoid, Masquerade challenges Joe again for the Infinity Core, but Dan shows up and battles him instead. Later, when Wavern died, he was shown to have regarded her as a friend. At the end, he is shown in the background with Chan Lee, confirming that they are indeed in love.
Season 2:
In Duel in the Dunes, Joe briefly appears in the group picture taken back in Season 1, shown by Dan, but he is never mentioned again in later seasons.