Valérian and Laureline , also known as Valérian: Spatio-Temporal Agent or just Valérian, is a French science fictioncomics series, created by writer Pierre Christin and artist Jean-Claude Mézières. First published in Pilote magazine in 1967, the final installment was published in 2010. All of the Valérian stories have been collected in graphic novelalbum format, comprising some twenty-one volumes plus a short story collection and an encyclopaedia. Valérian is one of the top five biggest selling Franco-Belgian comics titles of its publisher, Dargaud.