Oct 16, 2015, 12:35 PM
Your nature should depend on what you want to be surviving, as with your EVs. Generally you want to have a positive nature to the stat for which you have the highest base stat. But you may chose to have a positive nature to be able to have a higher value in that stat than is possible with a neutral nature and max investment. So Jolly may be used on Kangaskhan to be able to outspeed particular Pokemon like other positive natured base 100s like M Gardevoir, but it may chose Adamant to secure KOs it otherewise wouldn't. Generally Adamant is used for Kangaskhan as priority helps to outspeed certain threats and Jolly is only really used where outspeeding other Kangaskghan is important to make sure your team mate isn't faked out. Impish and Careful are used less often in VGC (which is what I'm assuming you are talking about as you mentioned Kang), and are only really ever used where the base stat of that particular stat is particularly high for a certain Pokemon, or where that nature is necessary to be able to survive a certain hit. For example Thundurus often run Calm to be able to survive common special attackers attacks like Specs Sylveon, Aegislash and Hydreigon.
Hidden power is far more straightforward. For VGC there are only few viable hidden powers. These are Ice, Ground, Grass, Fire and the occasional Flying. They are used to surprise enemies who believe wall you, like Landorus-T completely walls non HP Ice Thundurus. Using HP fighting on Thundurus doesn't make sense as it gets Focus Blast with double its base power (though granted at a lower accuracy). But instead of trying to beat Rock and Ice types, you should have team members which counter them. Plus in VGC there are few viable Ice types, so you will often survive most Ice type attacks. The same is sort of true with rock types.
Hidden power is far more straightforward. For VGC there are only few viable hidden powers. These are Ice, Ground, Grass, Fire and the occasional Flying. They are used to surprise enemies who believe wall you, like Landorus-T completely walls non HP Ice Thundurus. Using HP fighting on Thundurus doesn't make sense as it gets Focus Blast with double its base power (though granted at a lower accuracy). But instead of trying to beat Rock and Ice types, you should have team members which counter them. Plus in VGC there are few viable Ice types, so you will often survive most Ice type attacks. The same is sort of true with rock types.
