Angry Chomp Konradsean
Garchomp @ Choice Scarf
Jolly
252 ATK / 252 SPD / 6HP
-Outrage
-Earthquake
-Fire Blast / Flamethrower
-CrunchBeen using this myself since the early days and its the main sweeper on my team. Its bulky enough without EV investment. Jolly makes sure nothing can outspeed it and that it can at least tie with rival ScarfChomps.
Flamethrower or Fireblast - its your preference. Fire Blast is a guarenteed 2HKO on Skarmory, as long as you don't miss, while Flamethrower is a potential 2HKO, but not guarenteed. With SR support, you should pull it off though.
CountersAs with any Dragon, Ice Shard hurts him, but it can often take one, especially off a Donphan. A Weaville will only OHKO with Ice Shard if it's wearing a Choice Band. Life Orb doesn't guarentee it.
Suicune is generally bulky enough to take any of its attack and strike back with Ice Beam. Hippowden will wall it effectively enough, but its SandStream will actually help Garchomp. DOnphan as mentioned above can usually 2HKO him with Ice Shard while Garchomp can barely 3HKO back.
Angry Chomp noodles
Garchomp @ Choice Scarf
Adamant
252 ATK / 120 SPD / 136 HP
-Dragon Claw
-Earthquake
-Fire Blast / Flamethrower
-CrunchThis is a more attack focused set. It's got enough speed to outrun ScarfCross, though any Scarfers with 90 or more base SPD will out run this. The advantage of this is that you can run 394 ATK and beef yourself up with quite a bit more HP. Feel free to alter the SPD EVs to outrun specific targets.
Dragon Claw works well here as it makes it far easier to hit and run with the Scarf rather than being locked into Outrage. The latter is still an option though if you don't mind it.
CountersAs with any Dragon, Ice Shard hurts him, but it can often take one, especially off a Donphan. A Weaville will only OHKO with Ice Shard if it's wearing a Choice Band. Life Orb doesn't guarentee it.
Suicune is generally bulky enough to take any of its attack and strike back with Ice Beam. Hippowden will wall it effectively enough, but its SandStream will actually help Garchomp.
Any faster Scarfer can usually come in and smack him about easily enough. If they're packing an Ice move, it shouldn;t be too hard to bring him.