Jacques Géron started his comics career in 1970, when he won the fourth prize of the publisher Lombard, with his story 'Sargan et Merva'. He drew several police and science fiction stories for Artima. He also cooperated on the magazine Pilote and drew a a variety of strips, short stories and illustrations for the Dutch press, using the pseudonym Barney. From 1976, he was present at Curiosity Magazine and he began a longtime collaboration with the publisher Michel Deligne. He drew 'Le Fantôme de Géronimo' (text by Deligne, 1977), 'Les Conquistadores de la Liberté' (text by Nelod, 1978) and 'Visa Pour la Révolution' (1979).
At the same time, he produced 'Le Fouet! Madame' at Déesse under the pseudonym Elvis Gray. In 1979, Géron took over the series 'Yalek' from Christian Denayer (text by André-Paul Duchâteau). He also joined the magazine Spirou, where he did the puzzle comic 'Les Enquêtes de l'Inspecteur Corniche'. In 1984, he created 'Le Cygne de Bangkok' with a script by Brice at Garancière. The same year, he began self-publishing, creating comics like 'S Comme Sang' and 'Miami Beach'. For these works, he took on pseudonyms like Jack-Henry Hopper or Marlon.
Under his several pseudonyms, he made numerous illustrations for the erotic press (Gay Comix, Bédé Adult) and he cooperated on the collection Marquis at Glénat with 'Les Nuits Chaudes de Rangoon'. He cooperated with Duchâteau again on the comic adaptations of 'Arsène Lupin' at the publishing house Lefrancq. In 1991 and 1993, Création Art Presse published two of Géron's adult albums: 'Madame' and 'L'Hôtel du Con d'Or'. Jacques Géron died in 1993, at the age of forty-three.