General Chesnaught is one of the new starters for this gen; unlike Greninja, Chesnaught didn't take OU by storm. However, it finds a great place in UU thanks to a variety of factors. It has amazing physical bulk. A good typing gives Chesnaught an impressive set of resistance to match it's physical bulk. It's movepool is quite useful for creating passive damage; Spikes, Leech Seed, and Spiky Shield all hinder opposing teams. Lastly, its ability, Bulletproof, provides immunity to various projectile attacks which allows Chesnaught to completely shut down some select threats like Roserade. Chesnaught is a valuable member to many stall teams because of all these assets and its ability to counter many physical threats such as Crawdaunt and Terrakion. Chesnaught does have its bad traits. It's not very fast, 64 speed leaves it outspeed by a lot of the tier, including a number of other walls. Its special defense isn't great either. Together this leaves Chesnaught very vulnerable to special assaults, especially from the likes of MegaGardevoir, Chandelure, and Alakazam. Even for a physical wall, Chesnaught struggles against a few select threats, mainly Victini and Arcanine. Chesnaught also doesn't have much going on outside of its role as a supporter, leaving it as a very one dimensional Pokemon. Even with it's main role, Chesnaught suffers from competition with Deoxys-D, who has a better speed tier, and a more balanced defensive stat total. Lastly, Defog, one of the biggest changes in the 6th Generation, really hinders Chesnaught, especially since some of the main users of the move beat Chesnaught. Support Chesnaught @ Leftovers Trait: Bulletproof EVs: 252 HP / 252 Def / 4 Spd Impish Nature (+Def, -SAtk) - Spikes - Leech Seed / Synthesis - Spiky Shield - Hammer Arm / Wood Hammer Chesnaught's best used as a team supporter, providing Spikes and Leech Seed support for its teammates. Chesnaught can also check a number of physical threats that are quite dangerous in the metagame such as Terrakion, Crawdaunt, and Rhyperior. Chesnaught excels at forcing passive damage to opposing teams; Spikes hurt switches, Leech Seed does damage while healing, and Spiky Shield hinders any attempt to hit Chesnaught with contact moves. Spiky Shield also allows Chesnaught to scout choice users which relieves pressure from unpredictable threats like Victini. Hammer Arm and Wood Hammer are both viable STAB options for Chesnaught. Wood Hammer can leave a nasty sting if its used on high HP targets, while Hammer Arm has an annoying 10% chance to miss and lowers speed. Synthesis is helpful for faster healing, but Leech Seed and Leftovers combined with Spiky Shield generally provide adequate healing. It should be noted that an extra 4-12 EVs can be placed into Speed to outspeed various 65 base speed Pokemon such as Vaporeon, Alomomola, and Gothitelle and damage them before they Wish or boost. This set really appreciates support from a cleric, like Vaporeon or Mew, as it has a tendency to get statused and Chesnaught does not function well with the extra passive damage. Also, since Chesnaught has an annoying weakness to the various powerful Fire-types in the tier, a bulky Water-type to tank attacks helps create a potent core. If a team can afford the extra teamslot, Chesnaught likes to have Wish support, as its healing method is not entirely reliable (though with Sythesis, this is less of an issue). Lastly, something to spinblock, such as Doublade or Sabeleye, can help keep Chesnaught's spikes on the field. Other Options Chesnaught's movepool is surprisingly broad, though none of its options are easy to fit on the support set. The most viable option is Rocky Helmet, which would be run on the standard set instead of Leftovers. It creates even more passive damage at the cost of the extra healing that Leftovers provides. Taunt can force switches and stall Defog users and prevent healing. Roar can be used to force more hazard damage. Lastly, Toxic is the go to option for any wall and can provide extra passive damage. Chesnaught has a lot of offensive options. Curse, Belly Drum, Swords Dance, Power-Up-Punch, and Bulk Up can all boost Chesnaught's offensive stat, while Stone Edge, Dragon Claw, Earthquake and the like all provide coverage for various targets. Choice Band can also be run with these coverage options. Checks and Counters A number of Pokemon don't take much from Chesnaught's offensive moves; Chandelure, Salamence, MegaGardevoir (on Hammer Arm Chesnaught), Victini, Arcanine, special Jirachi, Crobat, Scolipede, Toxicroak and so on. However, what Chesnaught's biggest threat is passive damage. Leech Seed, Spiky Shield, and Spikes can all rack up residual damage on many of these Pokemon if it is allowed. Gourgiest, Trevenant, Florges, and Celebi all get note for being immune to many of Chesnaught's normal residual forms, and getting some form of healing. Zapdos and Mew both shutdown Chesnaught offensively and can Defog away Chesnaught's Spikes. Tentacruel can spin away Chesnaught's hazards, and can use Liquid Ooze to cause Leech Seed to backfire. Gothitelle gets a special note for trapping Chesnaught and OHKOing with Specs Psychic. Overal, Chesnaught is very weak to statuses and just general special pounding, so hitting it with Will-O-Wisp or Toxic will slowly kill it and powerful special attacks will force it out more often that not.