User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-21371438-20130921181848/@comment-1712810-20130921183624

Why are you so worked up over an achievement for the Kut-Ku? For a lot of veteran hunters, slaying the Kut-Ku was a big step in the early days when they were just starting out in the first Monster Hunter game. So if there's an award for killing one in MH4... I think that's just the developer's way of adding a little senitmental value. Also, Kut-Ku is just, REALLY popular, at least over in Japan. Capcom ran a poll a few years back asking players what monster they wanted to see return the most, and Kut-Ku was right at the top @ number 1. So, yeah... I'm not suprised that there's a small achievement for killing one. People like it. I'm personally not a Kut-Ku fan, but it doesn't bother me at all.

I also don't think there's any "non-important" monsters. They all play a role. We need derps like Great Jaggi and Kut-Ku to start out with in order progress to harder monsters, and it's only fair to give them some attention and detail like the rest of the monster roster. In that respect, that does make them important for the story aspect too...