Walter Leblanc is considered a pioneer of contemporary artistic practices, whose importance has drawn international attention. Leblanc is an important representative of the kinetic and optical art movements, defining his works as “sensorial geometry”. His materials are unorthodox and his ‘Torsions’ anticipated minimal trends. A co-founder of the G58 Hessenhuis, Leblanc associated with the ZERO group, participating in their international exhibitions. Following his first one-man show at the Palais des Beaux-Arts in Brussels (1961), Leblanc organised the exhibition 'Anti-Peinture' in Hessenhuis (Antwerp, 1962) and became part of the international group 'Nouvelle Tendance'. In 1964, Leblanc won the prestigious prize Jeune Peinture Belge/Jonge Belgische Schilderkunst. From 1977 until his early death in 1986, Leblanc was teaching at the Instituut voor Architectuur en Stedenbouwkunde (NHIBS), Antwerp.

Leblanc has been included in all major ZERO exhibitions, including 'ZERO: Countdown to Tomorrow' at the Guggenheim, New York, 2014.

Leblanc's works are in museums worldwide including: KMSKA, Anwerp; Musée d'art moderne, Brusslels; S.M.A.K, Ghent; Kunsthalle Mannheim; Centre Pompidou, Paris; Boijmans-Van Beuningen, Rotterdam; Stedelijk Museum, Amsterdam.