Long time lurker here. Just thought I'd actually post with an achievement though. I played all the way up to where I got without consulting the list of Trainers or the one with Pokemon and their movesets/items. I thought it would be more fun that way. I made it to battle 254 in Super Doubles in the Battle Maison.
The code for the video is 7ANG-WWWW-WWXX-3YPD
My team, with nicknames listed for when I try again in the future:
Mega-Kangashan @ Kangaskhanite, aka Motherboy
Jolly / Scrappy
31/31/31/x/31/31
252 Atk, 252 Spe, 4 HP
Fake Out
Return
Power Punch
Sucker Punch
Sylveon @ Choice Specs, aka Death Metal
Quiet / Pixilate
31/x/31/31/31/0
252 HP, 252 SpA, 4 Def
Hyper Voice
Moonblast
Shadow Ball
Psyshock
Conkeldurr @ Assault Vest, aka 2 Slabz
Brave / Guts
31/31/31/x/31/0
252 Atk, 252 SpD, 4 HP
Knock Off
Mach Punch
Drain Punch
Ice Punch
Gastrodon @ Leftovers, aka Thirsty
Bold / Storm Drain
31/x/31/31/31/31
252 HP, 252 SpA, 4 Def
Scald
Earth Power
Ice Beam
Sludge Bomb
The strategy was simple. Turn 1, lead with Kang and Sylveon. Mega evolve and fake out the biggest threat to my Kang, then fire off a massively powerful Pixilated and Choice Spec'd Hyper voice. The fake out almost always targets things that are fighting types (I'm looking at you, Terrakion/Mienshao/Medicham), Ghost types that would use Will-O-Wisp (obviously don't mega evolve so that I could take advantage of Scrappy), or Pokemon that tend to use OHKO moves (Fissure, Sheer Cold). Turn 2 was spamming Return on things that continue to threaten. PuP was only used when I was up against Steels/Rocks so I could break though them with Return, or when Kang was burned so that it could regain its power. 99% of the time I was only using Hyper Voice with Sylveon. The only notable exception was somewhere around battle 100, when the opponent led off with Registeel (or was it Entei? Can't recall) and Latias. I used Shadow Ball on Latias so that after I KO'd it, I could also use it for neutral damage on the other one. I would say 3/5 battles ended just by using this potent combination.
Next up, I picked Conkeldurr and Gastrodon as my bulky switch-ins. Guts Conkeldurr was specifically chosen because I had lost 2 streaks to Dusknoir and Spiritomb. Kang didn't have the required power to break them with out mega evolving, and even after mega evolving they wouldn't reliably attack, so Sucker Punch was useless. They kept burning it with WoW. Soooo in comes Conkeldurr, who gets the power boost from Guts and proceeds to wreck lives with a boosted Knock Off. I found Gastrodon to be the perfect partner for Sylveon because it could reliably switch in to both of its weakness, and proceed to annoy the opponent with Scald. He was also my answer to bulky Milotic and Suicune, both of whom have also ended previous streaks for me. Thirsty doesn't do much damage, but he stopped opponents from spamming STAB'd water moves. He's also lightweight enough that he never gets OHKOd by Grass Knot. One time, he even survived an Energy Ball. I swear I don't even know how.
How I lost: I misplayed. I was relentlessly targeting Walrein for fear of the haxxy Sheer Cold. Meanwhile, Donphan proceeded to absolutely destroy my starting lineup with Earthquake. Turn 3, Donphan activates its Quick Claw and finishes off my Kang with EQ. Hydreigon then uses Dragon Rush and flinches my Conkeldurr. 2 Slabz got KO'd next turn after letting off a measly Mach Punch on the Hydreigon. Poor Thirsty never had a chance against Hydreigon and Magnezone.
Changes I might make: I might substitute Hariyama for Conkeldurr. If I do that, I will either teach Thirsty Protect instead of Sludge Bomb to stall for more lefties recovery, or give him the Assault Vest. For Hariyama, I was thinking:
Hariyama @ Sitrus Berry, aka Hitchslap
Brave / Guts
31/31/31/x/31/0
252 HP, 252 Atk, 4 SpD
Fake Out
Knock Off
Close Combat
Bullet Punch/Ice Punch
My reason for this being that I would gain another Fake Out user. He has similar defensive bulk but way more power with CC. He doesn't have the same SpD, obviously.
Thoughts and comments?
Edits - Spelling, grammar, sentence structure, prose, edits, and additional set info.