>>149965893
It's what the above anon said, they don't want to make Superman and CM/Shazam too similar in personality, but that doesn't really check out because Golden Age/Silver Age Superman (his real personality) is distinguished by being aggressive, clever, bold, arrogant/naive, and the man who can do everything. He's incredibly kind but he's not pure of heart. He doesn't even have a no-kill rule, classic Batman and Wonder Woman do. He's sorta Christlike (Doc Savage), but in the sense that he's the violent savior. A "wild man" like Samson and Heracles.

Classic Billy is distinct for being pure of heart and closer to the loving-kindness Christ ideal. His adult transformation is meant to symbolize how young children view their fathers and adulthood. Billy is like Sora or Naruto.