C’est beau comme une tornade d’Ororo et justement ça représente des clusters de personnage de la Marvel.

http://ilovecharts.tumblr.com/post/31399294544/marvel-universe-data

This graph shows which characters have the most connections to other characters (highest degree). The deeper the blue color for a character (and its connections), the more links.

There are four big clusters of characters (you can see them in the different colored graphs above) which correspond to the X-Men, the Avengers, Spider-Man and Wolverine.