Why does Moon Knight have 2 different personalities?

Why does Moon Knight have 2 different personalities? After suffering a childhood trauma, the circumstances of which are revealed over Moon Knight’s first season, Marc Spector develops a case of DID, and now shares his body with a range of different personalities. Each of them has their own traits, as well as strengths and weaknesses.

After suffering a childhood trauma, the circumstances of which are revealed over Moon Knight’s first season, Marc Spector develops a case of DID, and now shares his body with a range of different personalities. Each of them has their own traits, as well as strengths and weaknesses.