Hmm, could you look into old comics? Like the original? They did still have violence, so you may want to avoid it, but it was at least cartoon-y violence.
Most comics nowadays (the big superhero ones), frankly, are not
age-appropriate for any 7 year old. It's a bit like the parents who let their kids watch South Park because "But it's a cartoon!
"- yeah, not for kids. They're graphic, they're sexualized, they're gratuitously violent. I love 'em, but they're much
more violent than the PG/PG-13 superhero movies they're cranking out.
Most superheroes are, ultimately, violent. I asked DP, who's a comic geek and did a thesis on superheroes, and they came up with a blank on non-violent superheroes. The only ones I can think of are very kiddy ones (ex. SuperWhy, which I think is for kids much younger than your son).
If you just want comics- there are loads
that are pretty low-violence or non-violent (not sure if you count slapstick, clearly-an-accident as violence), but if you specifically want superheroes... :/
Originally Posted by joyfulmomof2
I wonder if Calvin and Hobbes would interest him...though I'm not super familiar with that comic strip, but I know they have books out...
I love Calvin and Hobbes, but Calvin is a loner who constantly breaks the rules. Outside of his parents, all authority figures are (in Calvin's mind, so in the strip's eye) antagonists there to stop his fun. As are other children.
Also- it is violent. It's not Superhero "smashing a villain's face in graphically" violent, but Calvin has a bully who beats him up, he picks on the girl who lives down the street, and there are periodically strips featuring realistic dinosaurs doing realistic dinosaur things because as much as he says it's for Calvin, I think Bill Watterson just really likes drawing realistic dinosaurs. The violence is very much PG, the majority of the more 'graphic' violence is all imaginary (ex. he imagines dinosaurs in fighter jets blowing up the school), but it is there.
Again, I love the strip, it has a lot of value, but the OP's concerned about comics that show bad behavior in a way that could be positive. C&H is a pretty subtle strip that's ultimately from Calvin's viewpoint. I wouldn't worry about a child who already has pretty decent social interaction and no serious behavior problems, but it could definitely reinforce bad behavior that already exists.