User blog comment:IamJakuhoRaikoben/Chapter 389: The Twin Dragons vs. The King of Hades, Review./@comment-24277053-20140620100613/@comment-7418318-20140620101333

Happy acts stupid on occasion, but only to troll others. To me he often seems smarter than Natsu.

Just take the Erigor fight for example. There is was Happy who figured out to get rid of the strom mail and how to manipulate Natsu into doing what was necessary.

Frosch on the other hand seems to be rather... mentally limited shall we say?