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Source: https://writers.stackexchange.com/q/37643
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/

I'm trying to reveal the main character's background without diving into flashbacks or actually setting parts of the story in his past. So on three occasions I have three characters (two B characters, and one C character) reflect on an incident in the past of this character. These are at three different points in the story.

Is this a bad idea? It would be odd for the protagonist to suddenly dwell upon those past events himself, but they were more significant to the other characters, so its more natural that they would think of them.

I have four main POVs through the story, not including these three I'm asking about.

Any advice much appreciated.

Edit: Thank you all, that's incredibly helpful and I'm going to read through your comments a few times. These three characters do exist within the plot, so I'm not worried about a walk-on walk-off situation, but I did have concerns about their POV jarring if only used once, and about giving them too much prominence.

Original score: 8