Toxapex @ Waterium Z
Nature: takes siestas
EV's are 252 attack, 252 sp attack, and 4 speed
Toxapex is my favorite alolan Pokemon, so to me, it CANT be misused. its stats suggest a wall or sweeper, depending on the moveset. toxic or recover, I would generally pick toxic because the opponent might not use a physical move on baneful bunker. but recover is pretty good to, if you don't want to waste potions. venoshock, YES! if poisoned, it will do 120 damage, plus a critical hit via merciless! baneful bunker because its a good protecting move, plus it might poison the target. liquidation could lower its defense, making it stronger next time, but scald may burn the target. I really don't know about the items, but its always a good idea to have a wide variety of Z moves in case of different opponents. I also think that you should have attack EV's because its attack +sp atack is already low. that's pretty much the limit of my knowledge with toxapex, but I hope I helped out!