I've got a (9 yr old) kid that loves the Diary of a Wimpy Kid series. But it's terrible. The main character is a terrible friend, and a poor role model. The character frequently calls people stupid or morons, makes fun of kids outside the norm, and has weird 90s views of how boys and girls interact.

Can anyone suggest a series that their kid enjoyed for a similar audience? Even better if there are lots of them.