Need Opinion on The Best Nature.

[Green Special]

I need an opinion on the best nature for a pokemon whos going to be trained for the battle tower..My blastoise and charizard, and Dragonite.

[yourtrippinsweetie]

I need an opinion on the best nature for a pokemon whos going to be trained for the battle tower..My blastoise and charizard, and Dragonite.

go to serebii.net and go to pokemon of the week and find the pokemon u want and they will tell you the preferred nature

[Team Pokemon]

I can tell you but first I need to know the moves your pokemon will know.

[Green Special]

for now answer for my blastoise: surf, hydro pump, hydro cannon, and waterfall.

[Avatar of Khaine]

I reckon the best natures are the ones that don't modify the stats at all.

[The Jr Trainer]

I reckon the best natures are the ones that don't modify the stats at all.

No, are you crazy

Dragonite@Adamant
Charizard@Modest
Blastiose@Modest/Bold/Calm

[Team Pokemon]

Blastoise's nature should be modest. It raises special attack and lowers attack.* But if you change it's moveset and add a physical move, which I wouldn't recommend, it should be hardy/docile/bashful/quirky/serious, which have no effect at all.
*The jr trainer, I don't think bold or calm are good choices, because Blastoise's defense and special defence are already high enough.

[EderFranco]

for now answer for my blastoise: surf, hydro pump, hydro cannon, and waterfall.
oh man u are crazy... 4 water attacks!!!!... that's useless.

Blastoise@leftovers/chesto berry
Calm Nature
EVs: 252 HP, 128 Def, 128 SpDef
surf/ice beam/seismic toss
counter/mirror coat/yawn/toxic/haze/substitute/rest
counter/mirror coat/yawn/toxic/haze/substitute/rest
counter/mirror coat/yawn/toxic/haze/substitute/rest

blastoise is a tank, and that's how it must be used