DC Comics has a special system to rate their comics just like movies and TV shows have ratings.
Basically, the rating system is like a guide for parents to know what kind of content is in the comic book.
The ratings start with "E" for everyone which means it's all good for any ages. Then there's "T" for teen which means the comic might have some parts that are a bit scary or might have some swear words. "T+" is for teens and up, which means the comic might have some violence or mature themes.
The next rating is "M" which stands for mature. This means that there will be graphic violence or sensitive topics like sex or drugs, and the comic is only for adults.
So, if you want to know if a DC Comics title is age-appropriate for you or your little one, you can always check the rating before buying it!