Aaron

General Info - Aaron uses a lot of Bug types, and as such, you will have to be wary of the many statuses they can infict, such as Toxic. It would be a good idea to bring along a few Antidotes or Full Heals for this battle. Also, Bug types are weak to Rock, Fire and Flying, so bring those types.

Lv53 (Bug/Poison) - Dustox will usually start off with Toxic, so starting off with a Poison or Steel type (Immunity to Poison) is a good idea. You can attack Dustox with Ground type moves too, because although it may look like it can fly, it can't.

Lv53 (Bug/Flying) - Rock type attacks will do 4x the amount of damage to Beutifly. If you don't have a Rock type attack, Electric or Flying will also work. Don't worry about it hurting your Pokemon though, it's pretty weak.

Lv54 (Bug/Flying) - Deal with Vespiquen just like Beutifly. However, Vespiquen does have higher defence and can boost it's attack. Just get rid of it quickly and move on.

Lv53 (Bug/Fighting) - Heracross is 4x weak to Flying type attacks, so if you have a Staraptor or something like that, it can pretty much OHKO. Just watch out for Stone Edge, if Staraptor takes a hit from that its dead. Make sure Staraptor or whatever Flying type you're using is faster.

Lv53 (Poison/Dark) - Drapion is not a Bug type, so you will have to attack it from a different angle. Ground type moves are an excellent choice, especially if they have Earthquake.