Henri Decoster is a Belgian illustrator and painter, who worked as a comic artist in the 1970s. He attended the Royal Academy of Fine Arts in Brussels from 1969 until 1972, and then studied paining, printing and watercolors at the Anderlecht art school. Later studies include lithography at the Flemish Academy of Fine Arts in Anderlecht (1976-1977) and screen printing and reprographics with the Institute of Graphic Arts in Brussels (1994-1997).
He was part of Henri Desclez's team with Samedi Jeunesse, the children's supplement of newspaper Le Soir. Starting in 1974, he drew the science-fiction comic 'Richard Bantam' in Le Soir. This series was written by André-Paul Duchâteau and had previously appeared in Spirou in 1970, drawn by Desclez. Two books with Decoster's stories were published by the publishing house Rossel in 1975 and 1976 ('Les sept Périls de Sumor' and 'Le Châtiment des cinq Morts'). When Desclez was editor-in-chief of the Belgian edition of Tintin in 1975 and 1976, Decoster published two short stories with the character 'John Bricks' in this magazine, in cooperation with writer Noirret.
He has worked as an artist of infographics from 1986 and currently works as an engraver, painter, etcher, lithographer and printmaker in Brussels. He has signed his work with Henri Decoster, Henry Decoster and Terry until 1996, and since then with Henric Decoster. He has exhibited his work in several solo and group exhibitions since 1975.