These books are written and drawn by artists such as Florence Porcel, Erwann Surcouf, and Héloïse Chochois, but are edited by Boulet. Four to five books a year are planned to be released under this project. In 2017, Boulet started a collaboration with the publisher Delcourt in order to produce Project Octopus, a collection of scientific comic books evoking subjects as diverse as the exploration of Mars to philosophy. He started an English version of his blog in November 2009, where he republished all of his posts from the French blog from its start in 2004 in chronological order, at the rate of three posts per week. Roussel participated in the French-speaking 24-hour comics day in Montreal in 2008. Eleven volumes have been published as of November 2021. The drawings from his blog were first published in 2008, entitled 'Notes'. The popularity of his blog allowed him to become the first 'Godfather' of the newly created Paris Comic Strip Blog Festival ( Festival des blogs BD), in 2005. He replaced Lewis Trondheim as cartoonist of the comic strip Donjon Zénith. Since then, he has worked for French comics strip magazine Tchô ! and Psikopat, and on many others as an author or cartoonist. He then started a cartoon blog on the internet in July 2004, which made him well known in France.

In 2001, he published his first comic strip, Raghnarok. Roussel studied art at the Graduate School of Decorative Arts in Strasbourg. He was among the first French cartoonists to become famous by publishing a blog BD, starting in July 2004. Boulet, the pen name for Gilles Roussel ( French pronunciation: ( listen)), is a French comic book creator and cartoonist born 1 February 1975 in Meaux, France.

Le Ténébreux by Boulet