Gianluigi and Sergio Bonelli both wrote Tex stories, but they had different approaches, and their relationship was complex on a personal level. We learn about what inspired the images of the countryside where Tex and Carson would roam.

Some of the stories in Diabolik come from the outside, notably from readers. A few of them are recounted here. They often related to controversial topics in the news and in some cases, charges were pressed and copies of the comic book were seized and destroyed.

Diabolik drives a Jaguar, but not an ordinary Jaguar. He is able to transform the car in order to facilitate escaping when the need arises. In a way, both Diabolik and his car wear masks and assume different identities.