DS9 has Quark, VGR has Neelix. Are you happy or sad that there isn't this comical character in TNG? There are some funny lines sometimes but fortunately there isn't a character on the series that is ”supposed to be funny”. It is kind of fun when Odo shouts ”QUUAAAAARK” on the promenade in DS9. Still, somehow I feel that it's better that TNG doesn't have that joking thing going on. One could say that not having that joke character makes the series feel less scripted. Before someone says ”what about broccoli, I mean Barclay”.... he was only in few episodes, not a regular character.