Complex sentence: Upon his defeat, Serpentor intends to destroy Cobra Commander in his anger, however the cowardly former leader convinces Serpentor to spare his life, convincing him that he will make an excellent scapegoat for any of his failures.
Split into simpler sentences: Upon his defeat, Serpentor intends to destroy Cobra Commander in his anger. However, the former leader convinces Serpentor to spare his life, convincing him that he will make an excellent scapegoat for any of his failures.