Kilobyte is a main antagonist, introduced in the second season. He is known as the Cyber Stalker, created by the Master Programmer Rick Hummel to destroy the Lightning Knights and conquer the world for him. He is first controlled by Rick's programming, creating a series of plans to watch Ace Lightning destroy himself with unstable human emotions. He is eventually freed from Rick's control and decides to wipe out mankind and rule the world on his own.