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However, Mienshao is not by any means a flawless Pokemon. Its defensive stats are below average, greatly limiting the amount of times Mienshao is able to switch in. Also, High Jump Kick's recoil damage and imperfect accuracy means there's always a risk when you use it, and this does not go well with Mienshao's reliance on that move.
Physically Defensive Walls: Mienshao struggles to 2HKO Pokemon such as Suicune, Chesnaught, and physically defensive Arcanine without Life Orb. However, if it is running that item, they can be beaten after some previous damage.
Ghost-type Pokemon: Ghost-type Pokemon are immune to High Jump Kick and their mere presence on the opposing team is a threat to Mienshao. Knock Off helps against most of them, but Spiritomb doesn't fear any move and Doublade is capable of surviving two Life Orb-boosted hits after Stealth Rock damage.
Poison-type Pokemon: Poison-types resist High Jump Kick and U-turn, while Knock Off does neutral damage to most of them. Defensive Nidoqueen isn't 3HKOed by any combination of Mienshao's moves. Crobat 4x resists Fighting and Bug, and it only fears Stone Edge.
Fairy-type Pokemon: Fairies resist Mienshao's STAB moves and U-turn, and they only fear Poison Jab. Granbull deserves a special mention because it is not 2HKOed by Poison Jab thanks to Intimidate.
Faster Pokemon: Mienshao's subpar bulk means that most Pokemon faster than it can easily revenge kill it.
Protect and Spiky Shield: Protect and Spiky Shield prevent Mienshao from using High Jump Kick. Life Orb sets can play around them with good predictions, but the Choice Scarf set completely loses momentum.