Tigerra - Bakugan Mega Keychain Series #2 The hit anime Bakugan is coming to the fans in the form of keychains. Each keychain features a battle brawler from the hit anime series. In sphere form, the battle brawler is about 2". Series 2 is made up of 3 keychains (EACH SOLD SEPARATELY): Hydranoid, Skyress, and Tigerra. NOTE: This keychain cannot be used in actual game play. CHOKING HAZARD: Contains small parts. Not suitable for children under 3 years.