Superman is such a basic character that you can absolutely make stories about him without actually copying the character. Also, it's desirable to have your own

Superman is such a basic character that you can absolutely make stories about him without actually copying the character. Also, it's desirable to have your own character that you can merchandise exclusively. As an example, the Japanese manga/anime "One Punch Man" is a work that takes the very basic premise of an unbeatable super-man and goes interesting places with it.