Lucario

By virtue of its access to the rare Extreme Speed paired with Swords Dance and a decent offensive typing, Lucario carves out a small niche as a setup sweeper that can revenge kill faster threats like Mienshao and Maushold. Its ample coverage also makes it difficult for defensive staples like Jirachi and Slowbro to handle it reliably. However, Lucario's poor bulk and mediocre initial power make it difficult to find setup opportunities, especially if it forgoes Air Balloon for Life Orb's extra power. It also struggles with an awkward Speed tier, causing it to rely heavily on Extreme Speed; as such, faster Ghost-types like Gengar and Mimikyu are able to revenge kill it with ease. Lucario also faces competition from other physical setup sweepers, especially those that have priority; Mimikyu has a better typing and defensive utility with Disguise, while Bisharp has superior bulk and power.