The same as my previous topic except this time we obviously discuss the best designed Pokemon.
The traits of a well designed Pokemon? Here they are

:
Good name (not important)
Good artwork design (VERY important)
Original
I personally think Vespiquen is a very well designed Pokemon. She does in fact resemble a queen and her name is very well chosen. Also, her special move-pool is fitting.

Another well designed bug? Butterfree in my opinion. I like how it had a special move pool that utilises it's ability from Gen 3 onwards (Compound Eyes allows it to have higher accuracy, and many of it's moves are status inducing moves with 55-75% accuracy)
Although his stats are a bit low, that doesn't matter much in terms of design.

I also think Espeon had a very interesting design as well, being a somewhat feline Psychic (or, really a "nekomata")
