Keith Fermen is the son of Professor Clay Fermen, and the eldest, and Mira is the youngest. He and his family went to New Vestroia during the Vexos rule. Alongside his father he studied the anatomy and the skills of Bakugan, which helped him in his training to battle, and he teached about Bakugan to Mira.
But, Keith wished to become the Vexos (ruler race) ruler, ergo, become the New Vestroia leader, and tries use hi-tech for this. To keep his badness in secret, he uses a mask, changes his name to Spectra Phanton and change his hair color.