Antoon Herckenrath studied at the Academy in Antwerp, where he met his future colleague Eugeen Hermans. Hermans introduced him to the weekly magazine Ons Land in 1936, for which he did the layouts until 1945. He also became Hermans' assistant at Ons Volkske, where he debuted as a comic artist with his science-fiction story 'De Wonderlijke Reis van Jan Knap' in 1937. He took over all the artwork of the supplement when Hermans left in that same year. He drew the comic story 'Urasjima de vissersjongen' in 1942.
After World War II, Herckenrath was employed by De Goede Pers in Averbode, where he did the layouts and occasional comic strips for Averbode's Weekblad and Semaine d'Averbode. He also succeeded Renaat Demoen as cover illustrator for Vlaamse Filmpjes. Herckenrath's best known comic is probably 'In de greep van de octopus', which he made from a script by John Flanders for Zonneland and Petits Belges in 1950. Herckenrath was employed by Averbode until 1973, but is however best known for his work as a wood and burin engraver.