I'd probably go with something like Naughty Little Billy in Gourmet World.
くん is a diminuitive suffix. It's a cute-sounding syllable added to the ends of (usually boys') names. It's basically the same as the -y in shortened versions of boys' names, like Johnny or Billy, so if you want to use a European name instead of the Japanese name コックン (こく? + くん), something with a y at the end would work well. Using the word little adds to the diminuitiveness of the name.