
HP:45
Attack:100
Defense: 135
Sp.Attack:65
Sp.Defense: 135
Speed:45
Notable Traits: Dusknoir easily said is a defensive Pokemon. It has access to Pain Split, which can heal itself and damage it's foe. Also Dusknoir is a big abuser of Will-O-Wisp, which helps it take physical damage better. It also has the option to plays other roles with gravity, pursuit, and disable. Dusknoir is, overall, a wall to be cautious around, able to easily block most sweepers.
Standard-Noir
Dusknoir@Leftovers
Impish/Careful
252 HP/ 252 Def/ Sp.Def 4
-Will-O-Wisp
-Pain Split
- Shadow Sneak/ Shadow Punch
- Return/Fire Punch
This is pretty much the standard Dusknoir. You always want to max out its little HP. Pain is its main recovery option and great for weakening new Pokemon. Shadow Sneak is for priority to compensate its low speed. How Shadow punch may be used to stop the Double Team/ Minamizers/ Sand Attack users. Return is there for a fill in move and is the only move to hit normal types with.
Other Options: You may consider running Dusknoir on a Special Defensive set due to the already strong physical defense with Will-O-Wisp.
Unlikely seen set are offensive ones. You can consider running a Trick room set that fits well with him due to low speed. Another option is to use a subpunch Set, however other out class dusknoir.
A lum berry can also be incorporated to get rid of status effect which cripple dusknoir. Rest and Sleep talk may be seen as well
Counters: Dusknoir gets serverly crippled by status moves. Dusknoir can really have trouble with other ghost types. Most are on the special side which is dusknoir weak point. Chandelure is a large counter being able to switch in to a Will-O-wisp to suck it up, powering up a fire move. Anything that really can benefit from its status inducing moves is a counter.