I was a challenger. Here are my teams. I ended up using two different teams throughout the event. The first is a sandstorm team, the second a volt - turn team. There wasn't that much memorable about my team, although Desmond may remember that I set up with Dragonite while he was on the phone, so he handed my his badge about four turns into the fight.
Sandstorm:
[spoilerqf9]Tyranitar @ Shell Bell
Sassy /Sand Stream
EVs: 252 HP / 64 SpA / 192 SpD
- Crunch
- Ice Beam
- Stealth Rocks
- Fire Blast
Used mostly for Sand Stream and Stealth Rocks.
Landorus @ Life Orb
Jolly / Sand Force
EVs: 255 Atk / 255 Spe
- Stone Edge
- Earthquake
- Swords Dance
- Brick Break
My main set-up sweeper.
Terrakion @ Air Balloon
Jolly / Justified
EVs: 255 Atk / 255 Spe
- Stone Edge
- Rock Polish
- Swords Dance
- Close Combat
Double Dance set, cause Terrakion don't need no coverage.
Garchomp @ Choice Scarf
Jolly / Sand Veil
EVs: 255 Atk / 255 Spe
- Earthquake
- Dragon Claw
- Outrage
- Fire Blast
He is very fast. Very Fast.
Empoleon @ Leftovers
Calm / Torrent
EVs: 255 HP / 255 SpD
- Ice Beam
- Grass Knot
- Roar
- Scald
My other special tank, because Empoleon is that cool.
Scizor @ Choice Band
Adamant / Technician
EVs: 255 HP / 255 Atk
- U-turn
- Pursuit
- Bullet Punch
- Superpower
Bullet Punch is amazing. Also think I caught the normal elite four off guard with Superpower[/spoilerqf9]
This is my volt - turn team
[spoilerqf9]Scizor @ Choice Band
Adamant / Technician
EVs: 255 HP / 255 Atk
- U-turn
- Pursuit
- Bullet Punch
- Superpower
He is the only member of both teams, since he is the only sandstorm member with U-turn.
Infernape @ Life Orb
Naive / Blaze
EVs: 255 Atk / 255 Spe
- Overheat
- U-turn
- Mach Punch
- Close Combat
This guy is great as a mixed attacker. Also he has U-turn.
Jolteon @ Choice Specs
Timid / Volt Absorb
Evs: 255 SpA / 255 Spe
- Thunderbolt
- Volt Switch
- Shadow Ball
- Hidden Power [Ice]
I love Jolteon. Also the hidden power only has about 40 base power, but Jolteon's coverage is really that bad.
Galvantula @ Expert Belt
TImid / Compoundeyes
EVs: 255 SpA / 255 Spe
- Energy Ball
- Thunder
- Volt Switch
- Bug Buzz
This guy is awesome. I love high accuracy Thunder.
Rotom @ Choice Scarf
Modest / Levitate
EVs: 120 HP / 252 SpA / 136 Spe
- Trick
- Thunderbolt
- Volt Switch
- Leaf Storm
Rotom is very solid, great counter to ground types.
Zapdos @ Leftovers
Calm / Pressure
Evs: 248 HP / 236 SpD / 24 Spe
- Roost
- Heat Wave
- Thunder Wave
- Thunder Bolt
He doesn't have volt switch or u-turn. But I only have 5 guys with that move so I had to use someone for my last slot. He is a special tank and helps my other members sweep by inflicting paralysis.[/spoilerqf9]
These are other members that I used against leaders that weren't 6 v 6.
[spoilerqf9]Dragonite @ Leftovers
Adamant / Multiscale
EVs: 252 HP / 44 Atk / 212 Spe
- Dragon Claw
- Fire Punch
- Dragon Dance
- Roost
This is the Dragonite that swept Desmond, although I had forgot to give him and item before battling.
Gyarados @ Life Orb
Adamant / Intimidate
EVs: 255 Atk / 255 Spe
- Earthquake
- Stone Edge
- Dragon Dance
- Waterfall
One of the guys I used in the triple battle. Died but intimidate did its job.
Chandelure @ Choice Specs
Timid / Flash Fire
EVs: 255 SpA / 255 Spe
- Energy Ball
- Psychic
- Fire Blast
- Shadow Ball
Garchomp had the scarf in the 3 v3 so Channelure instead had choice specs, so it hit like two trucks.[/spoilerqf9]