The Little Bit Scary People by Emily Jenkins

Like lots of other books, this one provides a series, in this care of people who may seem scary but really aren't. It shares fun details about both why they are scary (e.g., demanding a hall pass at school) and why they are not (e.g., dancing). What I love about this book is that it teaches empathy, and that each person is dynamic and complicated. The natural temptation to see others and our interactions with them as one dimensional ("that person is mean") is significant. The sooner we teach children empathy, the better.