Munchlax

Thanks to its massive base 135 HP and its great base 85 Special Defense, Munchlax has no trouble shrugging off most special attacks. Combine this with Thick Fat, and Munchlax is one of the hardest stops to Fire- and Ice-type Pokemon in the metagame. Munchlax also has a good base 85 Attack stat, allowing it to hit hard with moves such as Body Slam, Fire Punch, and Earthquake. However, base 40 Defense is quite low, and a horrid base 5 Speed means Munchlax will almost always be moving last. Fighting-types such as Mienfoo, Timburr, and Scraggy are omnipresent in Little Cup and can easily prey on Munchlax. Finally, Munchlax faces serious competition from Porygon as a Normal-type tank, as Porygon has better mixed bulk, access to Recover, and a wider movepool.