Bizarro Superman was created when Luthor used the Bizarro Duplicator Ray on Superman. The ray was meant to create a powerful weapon that Luthor could use to defeat Superman, but it malfunctioned and created Bizarro Superman instead.
Bizarro Superman has all of Superman's powers, but they are often weaker and less effective. For example, his heat vision can only produce a cold beam, and his super strength is not as strong as Superman's. Bizarro Superman also has a number of deformities, including a misshapen head, mismatched eyes, and a backwards cape.
Bizarro Superman's personality is also very different from Superman's. He is cruel, sadistic, and has no regard for human life. He often delights in causing pain and suffering, and he is always trying to find new ways to defeat Superman.
Despite his evil nature, Bizarro Superman has sometimes shown moments of kindness and compassion. He has saved the lives of innocent people, and he has even worked alongside Superman to stop a common enemy. However, these moments are rare, and Bizarro Superman is usually just a villain who is trying to destroy Superman and the world he lives in.
Bizarro Superman is a powerful and dangerous enemy who has repeatedly challenged Superman. He is a reminder that even the strongest of heroes can be defeated, and that even the smallest mistake can have devastating consequences.