Dusknoir

Dusknoir carves its niche in NU as a bulky spinblocker that distinguishes itself from other Ghost-types such as Gourgeist-XL and Golurk by virtue of its higher Special Defense and lack of secondary typing. This in turn rids it of exploitable weaknesses to common attacking types, Ice in particular, making it capable of taking on the likes of Hitmonchan with few problems. Dusknoir also possesses priority in Shadow Sneak, which allows it to take out targets like Mismagius and Rotom with very little prior damage. Despite its average Attack stat, Dusknoir is able to soften up more defensively oriented Pokemon such as Steelix and Rhydon with Earthquake when running its Choice Band set. However, lack of a strong STAB attack means that it struggles to break defensive threats, especially Normal-types such as Miltank and Mega Audino, which are immune to Shadow Sneak and not weak to Dusknoir's coverage. Despite boasting acceptable physical and special bulk, Dusknoir is unable to use either stat fully as a result of its poor HP. Low Speed causes it to rely on Shadow Sneak in order to deal with faster Pokemon like Archeops and Jynx, which is problematic due to the move's low power, and means it's outpaced by some defensive Pokemon such as Lanturn and Weezing. Additionally, Shadow Sneak's inability to hit fast Normal-types such as Tauros, Kangaskhan, and Swellow prevents Dusknoir from taking on said Pokemon effectively. Furthermore, its low Base Power prevents Dusknoir from KOing certain offensive Pokemon such as Lilligant and Floatzel from full HP. Lastly, since Dusknoir has to wield a Choice Band in order to have decent damage output, one must predict constantly. A single misplay can be incredibly costly and end up losing a lot of momentum.