Vespiquen @ Flying Gem
EVs: 252 Atk / 129 Def / 129 SDef
- Attack Order
- Hone Claws/Roost
Brave nature functions well in Trick Room, although Adamant nature won't really make much of a difference. Attack Order is a powerful STAB move and has a high critical hit ratio, Roost for healing (can also be substituted with Heal Order, to each their own) or Hone Claws to power up, Acrobatics is AMAZING with the Flying Gem boost, and after it has been used base power raises to 165. You can either use Pursuit or U-Turn, both are equally as good. U-Turn allows you to switch out and - because of Vespiquen's low speed - you will almost always be getting switch advantage. I prefer to use Pursuit because a lot of Psychic types will switch out on a Vespiquen, so you can damage them that way.
Vespiquen @ Leftovers
EVs: 80 HP / 215 Def / 215 SDef
- Defend Order/Protect
- Roost/Heal Order
- Destiny Bond/Protect
This one is more of a staller, also functioning well in Trick Room. It has more use with Sassy Nature, majority of the moves it is weak to are special attacks. After a good few Defend Orders, its stats are raised quite nicely and you can just Roost/Heal Order (again, to each their own) away the damage. Toxic is, obviously, to deal recursive damage to the foe at the end of each turn. It's a matter of choice between Destiny Bond and Protect. Protect is if you want to make Vespiquen last a bit longer as a staller. Although I prefer running Destiny Bond - in a Trick Room you can give your foe a nice little surprise before they take you out.