Merho is best known as the creator of the funny family comic 'De Kiekeboes' (1977), which managed to become one of the most succesful comics series in Flanders. The books are brimful with all kinds of visual jokes, slapstick, running gags, parodies, innuendo and especially word play. Comics specialist Jan Smet once named Merho "the cabaret artist of Flemish comics". Another nickname Merho received over the years is "Willy Vandersteen's natural successor". 'De Kiekeboes' managed to become the best-selling comics series in Flanders since Vandersteen's equally popular 'Suske en Wiske', even surpassing it in local sales today. Contrary to most other comics in the region which are either marketed to children or adults Merho managed to appeal to both demographics. The adventures of the Kiekeboe family are not stuck in an old-fashioned setting, but very much of their own age, constantly evolving with the times. Storylines handle mature themes like politics, business fraud, violent deaths and even sex, but do so in a clever, tasteful and always amusing manner. Merho is also easily one of the most experimental Flemish comics artists. Occasionally he tries out unusual narratives and collaborates with other artists and writers, which keep the franchise fresh and interesting.
