Bakugan BTC-24 Gren Dragaon (Completed) SegaToys [JAPAN] Bakugan for customization developed with "Japanese Monthly Coro Coro Comic" group. Shoot Bakugan and let it suddenly change its shape. You can customize base on your strategy. Appeared as a hero in "Baku TECH! Bakumaru" of "Japanese Monthly Coro Coro Comic".