Update #3
You can check my challenges and previous updates in the link in my sig.
-So with Otto the Dewott, Timothy the Tympole and Roman the Woobat, I chase Team Plasma in Pinwheel forest.
-I get the skull back and return it to Lenora
-I go through to Castelia City and fight quite a few tough Clerks.
-Around this time Tympole evolves to Palpitoed and Woobat evolves into Swoobat.
-I beat Team Plasma in Castelia and Munna gets returned to Bianca.
-As my challenge is to beat Burgh without any STAB moves, my options are:
-Uproar on Timothy
-Fury Cutter or Retaliate on Otto
-Assurance on Roman.
All my pokemon are level 25 at this point.
I send in Timothy first. Uproar does a little less than half on Whirlipede. This means I get it to red after two hits and Burgh uses a super potion. Whirlipede does pathetic damage with a move, that I can't even remember right now...
So after getting it down to red twice and Burgh using a super potion twice, I finally KO it after about 7 hits.
Burgh then sends out Leavanny. Oddly enough Palpitoed outspeeds (I know it's 2 levels higher, but still) and hits with Uproar that I'm still locked into. Leavanny then KO's with Razor Leaf.
I then send in Otto, who doesn't take that much damage from Razor Leaf as it is holding an Eviolite and KO's Leavanny with Retaliate.
I then proceed to Fury Cutter Dwebble to death.
All in all, that was my easiest gym battle yet. I haven't boxed a pokemon yet as what I choose to box will depend on my next challenge.
TEAM:

Otto lvl. 26
-Water Pulse
-Retaliate
-Fury Cutter
-Razor Shell
Otto is really good and was my MVP in the last battle.

Timothy lvl. 25
-Bubblebeam
-Mud Shot
-Uproar
-Aqua Ring
Timothy is now a pretty good pokemon. He's got 2 nice STABs and is capable of doing good damage with them.

Roman lvl. 25
-Heart Stamp
-Air Cutter
-Confusion
-Assurance
After evolving, Roman has improved slightly, but once I gain access to Sigilyph he probably won't be sticking around.

Rose lvl. 24
-Quick Attack
-Air Cutter
-Work Up
-Roost
Has been boxed since Nacrene Gym.
So I've defeated another gym leader. Which means...
I need a post-Burgh challenge before I can continue!!!
(You can also post challenges in advance if you so wish, as it stops me from having to stop playing all the time.)