Willys de Castro (Uberlândia, Minas Gerais, 1926 - São Paulo, 1988). Painter, engraver, draughtsman, scenographer, costume designer and graphic artist. In 1950, he began an apprenticeship in graphic arts, executing his first abstract-geometric paintings and drawings. In 1958, he went to study in Europe, and in the following year back Brazil, joined the Grupo Neoconcreto [Neoconcretist Group] in Rio de Janeiro. Between 1959 and 1962, he worked on the Objetos Ativos [Active Objects] series, which explore plane and volume as plastic elements, questioning the use of the canvas as a support for pictorial language. His work is included in important collections such as Instituto da Arte Contemporanea, Pinacoteca do Estado de São Paulo, and Museo de Arte de São Paulo, Sao Paulo; The Museum of Modern Art and Colección Patricia Phelps de Cisneros, New York