Metagross

What stands out most about Metagross is its sky-high base 135 Attack stat and high-powered STAB move in Meteor Mash, which, in conjunction with a Choice Band and its solid bulk, lets it OHKO common offensive Pokemon such as Primarina, Latias, and Hydreigon after Stealth Rock. This ability to stay in and do big damage gives it a valid niche among the tier's many offensive Steel-types, mainly Scizor, which doesn't have a STAB move as powerful as Meteor Mash. Metagross's movepool and other stats are also decent, which allows it to serve niche support roles as needed, either as a bulky Stealth Rock setter or as an offensive lure. Thanks to its bulk and power, it is unique among offensive Stealth Rock setters in its ability to soft check Pokemon such as Mega Altaria and Latias much more proficiently than its closest analog in Cobalion. These niches help it distinguish itself from Scizor, Cobalion, and Bisharp, which otherwise thoroughly outclass it as a strong offensive Steel-type due to their ability to set up while being forced out by much less of the tier. Metagross also suffers from a mediocre base 70 Speed, a lack of recovery, and a glaring weakness to common offensive types in Fire, Ground, and Dark, which makes it easy to overwhelm with strong attacks, entry hazards, and the ever-present Pursuit.