Ask HN: What are some thought-provoking comics I can read with my kids?

I'm interested in doing a book club of sorts with my children. I'm looking for something in the sci-fi/fantasy realm that depicts characters with a variety of motivations, biases, and cultural backgrounds. I want to be able to discuss how the fictional world influences how the characters think, feel, and grow.

A junior high reading comprehension level would probably be best, although I'm willing to consider things more juvenile or advanced. It can be a paper and ink graphic novel or a digital format like a web comic; either is fine.