At number six we have the long-time fan-favorite Bug and Fighting type, Heracross. Judging from its appearance in Generation 2, we expect Defense to be its strongest stat in Pokemon GO. Of course, it still has a decent Attack stat, but it shouldn't be quite as high as its Defense. Its Stamina is likely higher than Kingdra's, though not by much.
Heracross is the only Pokemon on this list that doesn't evolve. That also means there's no way to prepare for a good Heracross before the update hits. Chances are, it won't be easy to find, either. If you decide to use a Heracross, we wish you the best of luck on your bug hunt.