Guillaume Mayor aka Guyomsk, born in 1985, is originally from the canton of Vaud, but emigrated to the Valais to complete his art studies and settle there. Now a freelance cartoonist and illustrator, he works with several fanzines and magazines in French-speaking Switzerland, as well as 2 Valais newspapers. A lover of comics since childhood, he has been teaching this passion to primary school classes in Valais for over 10 years. He is currently working on his first album with a publishing house, based on his Hans & Maurice series published in the Journal de Sierre and featuring a new adventure.