at what point in the story does the reader get a clear idea of who characters are becoming?

The reader typically gets a clear idea of who characters are becoming as the story progresses and their actions and motivations are revealed. This can happen at various points in the story, depending on the pacing and structure of the narrative. For some characters, their development may be evident early on, while others may undergo significant growth or change later in the story. Ultimately, the reader's understanding of who characters are becoming is often shaped by their interactions with other characters, their decisions and actions, and the obstacles they face throughout the story.