Huntail

Huntail faces too much competition from other Shell Smash users in PU to ever be worth considering; Omastar and Turtonator have access to stronger Special Attack stats and STAB moves, while Carracosta has better bulk with access to a reliable priority attack in Aqua Jet. Huntail only has one small niche in its access to Sucker Punch, which gives it a tool to outspeed would-be revenge killers like Choice Scarf Dodrio. On the downside, finding setup opportunities with Huntail is difficult because it has mediocre bulk and doesn't have access to Solid Rock. Additionally, being susceptible to all form of entry hazards means that Huntail has to be preserved for late-game, since it gets worn down easily, making setup opportunities even more difficult. Also, unfortunately, even after a +2 Speed boost from Shell Smash, Huntail is easily revenge killed by faster foes such as Choice Scarf Primeape and Rotom-F, which take a +2 Sucker Punch. Furthermore, despite having Ice Beam, Huntail struggles at breaking through certain Grass-type Pokemon like Ferroseed and Abomasnow. Huntail also has trouble getting past bulky Water-types, like Gastrodon, which can wall it and thus prevent a sweep.