Keith Clay is the son of Professor Clay and is the older brother of Mira Clay. He likes science like his father and knows how to make Mechanical Bakugan and other machines. At some point he became Spectra Phantom before the show started. He joined the Vexos as the Pyrus brawler and became the leader of the group. He really doesn't like Dan at first and wants his Bakugan Helios to be the strongest. He also knows about evolution and helps his Bakugan evolve many times. For most of the show he is Spectra but Mira suspects Spectra is her brother. He often helped Professor Clay, his father, with making new toys for Helios. It is unknown if he told or if Professor Clay knew that Spectra was his son. At some point he got kicked out of the Vexos and left to live on his fly ship. Gus and Lync went