Article in English: You want your characters to be full and rich, since this makes your players more engaged and invested in the game. This means giving characters complex personalities and faults. If you need help imagining and writing complex personalities, try some character development exercises, by plotting your character on the Myers-Briggs personality chart or the character alignment chart. Your characters should change as people over the course of the game. This makes them more interesting. This means that they should generally start off with some major flaws or a generally worse personality than how they end up. It's really easy when writing characters to make them do what we would do instead of what they would do. But this kind of lazy writing is often visible to players because it comes across as so unnatural. Focus on what your characters would do and you'll make your game much better. Games tend to lack diversity, with characters being vastly more similar than in real life. This can make games feel similar and boring. By including diversity in your game, you can not only make it more interesting, but also increase the hype for your game by setting it apart from others.

Summary in Chinese:
发展完整的角色。 留点角色的发展空间。 换位思考。 多样化思考。