Walter Melon isn't, contrary to what some might think, loosely based on James Thurber's "The Secret Life of Walter Mitty". Not even close. Instead, Melon and his assistant, Bitterbug, run a hero-for-hire service, in which they step in for a hero who is either incapacitated due to illness or distress, or is just plain unavailable due to being away for other matters. In truth, the series, based on a French-Belgian comic strip and television series, parodies pop culture & literature in the course of its run. Here in the US, the series aired on Fox Family (now ABC Family), but was cancelled after 1 season.
MrNickelodeon90 uploaded the series opener, with the episodes, "Marzipan The Ape-Man" & "Goldenrod", parodying Tarzan & James Bond, respectively.
I only saw part of an episode, which is how I came to the assumption that this was a modern take on Walter Mitty. However, it was enough to convince me that this series was doomed to failure. A 2nd season was planned, but never aired in the US.