Jack is an underground beyblader and a very minor character. He was chosen to wield the invisible wind Bit-Beast, Sickle Weasel. He challenges Kai and severely hurts him as Kai is unable to see his Bit-Beast. Once Kai is able to see his Bit-Beast he summons Dranzer and destroys Sickle Weasel at the cost of damaging his own beyblade even further. Jack (Original Series) Japanese Name English Translation Owner Beyblades Types First Appearance (Anime) First Appearance (Manga)