Born in Brussels, Pierre Legein spent his early childhood in Canada and The Netherlands. He began studying medicines at age 18, and he followed art courses at the same time. He studied journalism for two years, before he focused completely on drawing. He took courses by Eddy Paape, where he met Didier Crisse. Legein entered the fields under the guidance of Crisse. He began doing storyboards and advertising arts. His first comics work was assisting MiTacq on an episode of 'La Patrouille des Castors'. After a brief appearance in Hello Bédé, he took over the artwork of the series 'Dampierre' from Eric in 1994 (text by Yves Swolfs).