Gerard Clemens Maria Wiegel started his career in 1958. In the early 1960s, he worked for children's magazine OKKI, for which he drew 'Kimo'. In 1962 he created 'Professor Vliegop', who evolved into his most popular character 'Professor Cumulus'. This series appeared in newspaper De Volkskrant from 1967 until 1970.
Gerard Wiegel, who signed his work Wiel, was also a productive contributor to magazine Kris Kras in the 1960s. There he published the early 'Professor Vliegop', as well as many cartoons, gag-strips (like 'Tiep') and illustrations. For Radio TV Gids, he made the silent strip 'Flossie' in the early 1960s.