What is the nature of the cartoon girl's nude butt wiggle?

Sometimes it is. It depends on the rights and creative decisions of the filmmakers.

Some local comic book stores might offer subscription services for Spider-Man comics for kids. You could call around and ask. Also, some online platforms specializing in comics might have what you need.

In Iron Man comics, the arc reactor is typically depicted as a high-tech device that powers Tony Stark's suits and keeps him alive. It's a symbol of his ingenuity and innovation.

Perhaps they end up sharing stories about the times they were chosen for important projects or joking about being overused in certain designs.

Black and white interracial comics often explore diverse themes and showcase cultural differences and similarities. They might have unique art styles and tell stories that challenge stereotypes.

I have no clear idea. It might be a manga that explores unusual friendships or has some sort of controversial plotline.

This kind of comic often contains adult and inappropriate content, and its style might be rather explicit and unconventional.

There's one called 'The Secret World of Arrietty' where a little girl has many exciting adventures in a hidden world.

Creativity and a good sense of composition are key. Also, having strong drawing fundamentals like understanding anatomy and perspective helps a lot.

There's no direct connection. 'Cardfight Vanguard' is a separate manga, and 'Manga Rock' is a platform where you might find it, but they aren't inherently related.