Adamant on Weavile is like finding a shiny pokemon lol, you can't really find it.
Most weavile are Jolly
Also, I can't agree to SD Lucario 6-0'ing this at all. All I need to do is outpredict and Fire Punch or Vacuum Wave and that threat is gone. If I take out Donphan the team will become yet more Mixape weak... not like Donphan does anything other than kill some dragons. Atm, I have NO IDEA how to deal with the Weavile problem. Weavile leads will not present a problem at all, weather they Brick Break, Night Slash or Ice Punch Earthquake will be there, Weavile Mid-Game is what worries me...
SD Lucario Ohko's everything though =/ Crunch OHko's Dusknoir, Close Combat beats everything else, and smart Lucario user will switch out of its counterpart and bring it back later predicting the obvious Vacuum Wave, which means every time it comes in, your gonna have to sacrifice a pokemon.
Forretress, Skarmory, Reflect Metagross, Bronzong, intact most steels are your friend against Weavile, along with Weezing etc.
Ive already gave you some viable mixape counters, Tentacruel, Starmie, Cresselia, Vaporeon etc.
I think Bronzong will sufice here, Heatproof Bronzong fails badly actually. My mixape problem will be solved by keeping my pokemon in and not switching because a switch would mean Nasty Plot and IF I am able to outpredict, then Mixape will die with no worries.
Yes Bronzong beats up weavile.
EDIT: erm, Donphan takes out Weavile with one Earthquake easily actually, damage is 384 minimum that is.... Weavile with MAX HP runs @ 344, and we all know Weaviles dont run HP which means they have 281 @ 0 EV's 31 IV's. and Since donphan can live 2 Ice Punches then it will not be a problem. and even when I am left at low HP, Ice Sharding action will still be possible, IF I revenge kill with the donphan.
Choice Band Ice Punch 2hko's Hippowdon and Swampert, and therefor Donphan aswell, EQ does around 60% to weavile.