Complex sentence: Brainiac survives Krypton's destruction after downloading his programming into a satellite and creating an android body for himself, travelling to other planets and assimilating their information before destroying them, claiming that the fewer beings who possess the knowledge, the more precious it becomes.
Split into simpler sentences: Brainiac survives Krypton's destruction after downloading his programming into a satellite and creating an android body for himself. He then travelled to other planets and assimilated their information before destroying them, claiming that the fewer beings who possess the knowledge, the more precious it becomes.