small potatoes 小人物；微不足道的人

【例句】
Portraying these male small potatoes in the city reflects the author's distinct original purpose.
塑造这些都市男性小人物体现了作者鲜明的创作意图。

In fact, many characters in films seem like those small potatoes around us, like ourselves, who enjoy interesting things in ordinary lives.
其实电影中的很多角色也如我们身边的那些微不足道的人，就像我们自己，在平凡的生活中有着有趣的故事。