Carracosta

A solid typing combined with excellent physical bulk lets Carracosta check Archeops, Scyther, Normal-types, Fire-types, and various other physical attackers. Solid Rock further enhances its defensive capabilities, allowing it to take weak or non-STAB super effective moves with ease. Carracosta also boasts access to the coveted Shell Smash, the best setup move in the game, which it finds ample opportunity to use due to its aforementioned qualities. Shell Smash pairs well with Carracosta's high Attack and decent Special Attack stats, as it is able to attack with boosted physical or special hits to surprise its checks and counters. Carracosta isn't perfect, however; its low Speed stat means that it can't outspeed much of anything, and even at +2 it's not that fast. A low Special Defense stat makes Carracosta struggle to check most moderately strong special attackers. For all its advantages, its typing leaves it weak to several common types, most notably giving it an exploitable 3x weakness to Grass with Solid Rock and mild susceptibility to Fighting- and Electric-types. Carracosta also faces competition from Barbaracle as a physical Shell Smash user, as Barbaracle has important niches in its wide coverage, Tough Claws, and, most importantly, a higher Speed stat that lets it outspeed Swellow and most Choice Scarf users.