Power Spheras are high-tech robots carrying powers unimaginable. Coverted by many, these robots fled and hid themselves in various parts of the galaxy
Extracted from the Prologue in BoBoiBoy: The Movie Comic Book Adaptation, Planet Ata Ta Tiga was invaded by evil aliens, the Kubulus created the Floating Island out of their enemies' sight. In that island, the Kubulus created Klamkabot, a first generation Power Sphere. The evil aliens tried to destroy it but failed. Klamkabot defeated them and a new era of peace emerged from Planet Ata Ta Tiga.
Since then, the Power Spheres began to live with the Kubulus and they created more generations of Power Spheres. However, with the abilities of Power Spheres, the Kubulus became power-hungry. They reprogrammed some Power Spheres to become ruthless, mindless destroyers. With these robots, the Kubulus conquered many planets across the galaxy and formed a new empire