
Generation VI brought Scrafty a handful of both boons and burdens. The most noticeable of problems for him is his new 4x Weakness to Fairy-type moves. You'd consider that to be a deal-breaker to keep him out of OU, but there's one important new toy he gained this generation: Assault Vest. But before we go into him more, let's go over the basics.
Type: Fighting/Dark
Base Stats: 65/90/115/45/115/58 (488 total)
Abilities: Shed Skin / Moxie / Intimidate (Hidden Ability)
Notable Moves
Low Kick
Brick Break
Payback
Chip Away
High Jump Kick
Crunch
Focus Punch
Head Smash
Dragon Claw
Roar
Bulk Up
Low Sweep
Fling
Stone Edge
Rock Slide
Dragon Tail
Poison Jab
Power-Up Punch
Detect
Dragon Dance
Drain Punch
Fake Out
Fire Punch
Ice Punch
Quick Guard
Thunder Punch
Zen Headbutt
Iron Head (B2W2 Move Tutor)
Knock Off (B2W2 Move Tutor)
Overview
In Gen V, Scrafty was relegated to UU. While he has fantastic sweeping potential with Dragon Dance and the Moxie ability, he just isn't fast enough to guarantee a sweep, even with a D-Dance. Shed Skin could act as a potential Lum, but the 30% chance wasn't quite so viable. He got Intimidate in B2/W2, which helped somewhat, but he still had to worry about special threats. But now with the addition of Assault Vest, Scrafty has been upgraded to an incredibly viable tank.
Movesets:
Assault Vest Tank
Drain Punch
Power-Up Punch
Fire Punch/Ice Punch/Thunder Punch/Crunch/Stone Edge
Fake Out/Crunch
Ability:Intimidate
Item: Assault Vest
Nature: Adamant/Impish
EVs: 252 HP / 252 Atk / 4 Def
This is Scrafty's ideal defensive set. It works best in Doubles/Triples, but it still does wonders in Singles. Drain Punch helps Scrafty maintain his overall tankiness, keeping him healthy and fighting fit. Power-Up Punch is an excellent move to either take out weak Pokemons or to use on an expected switch-in, since it raises Scrafty's Attack while still keeping his Assault Vest boost. The elemental punches are great coverage options, but Crunch gains STAB, so if you need a Dark move or don't need one of the elemental punches, you may want to go with Crunch. Stone Edge is also beneficial, if you choose to run it. For the fourth move, Fake Out is a great stall move, especially if you're battling weather teams and want to run out their clock, but it's also good for finishing off weak opponents or just getting some extra damage in. However, if you don't feel like you need it and you have one of the elemental punches, you can use that slot for Crunch.
Some quick damage calculations:
252 SpA Choice Specs Latios Draco Meteor vs. 252 HP / 0 SpD Assault Vest Scrafty: 189-223 (56.5 - 66.7%) -- guaranteed 2HKO
252+ Atk Scrafty Crunch vs. 4 HP / 0 Def Latios: 270-318 (89.4 - 105.2%) -- 31.3% chance to OHKO (certain kill after Fake-Out)
-1 252+ Atk Technician Mega Scizor Bullet Punch vs. 252 HP / 4 Def Scrafty: 72-85 (21.5 - 25.4%) -- 0.3% chance to 4HKO
252+ Atk Scrafty Fire Punch vs. 252 HP / 0 Def Mega Scizor: 212-252 (61.6 - 73.2%) -- guaranteed 2HKO
+1 252+ Atk Aegislash-Blade Sacred Sword vs. 252 HP / 4 Def Scrafty: 318-376 (95.2 - 112.5%) -- 75% chance to OHKO (assuming Swords Dance)
252+ Atk Scrafty Crunch vs. 252 HP / 0 Def Aegislash-Blade: 390-458 (120.3 - 141.3%) -- guaranteed OHKO
252 SpA Life Orb Greninja Hydro Pump vs. 252 HP / 0 SpD Assault Vest Scrafty: 118-140 (35.3 - 41.9%) -- guaranteed 3HKO
252+ Atk Scrafty Thunder Punch vs. 4 HP / 0 Def Greninja: 194-230 (67.8 - 80.4%) -- guaranteed 2HKO
And that's assuming you haven't been Power-Up Punching at all.
That being said, Scrafty's main gimmick will most likely be switching in and out and providing Fake Outs while lowering enemy attack. Intimidate cripples physical beaters, while his Assault Vest weakens special attacks to the point where Drain Punch makes up for any damage lost.
More sets to come later
Conclusion
Scrafty is going to be absolutely terrifying in Doubles and Triples, since Fake Out and Intimidate make him a Hitmontop-level horror. And while he may not have Hitmontop's Wide Guard, he does have far greater bulk, and can perform his fair share of kills much better than Hitmontop can. In Singles, he'll be just as good; he'll just need a good Steel, Poison, or Fire teammate to suck up those scary Moonblasts.