Relicanth

Relicanth separates itself from other physical Rock-types in the tier with access to the combination of Rock Head and Head Smash, which amplifies its wallbreaking prowess to exceptional levels. Furthermore, Relicanth has excellent coverage in NU between its STAB and coverage moves to hit almost all of the relevant Pokemon for at least neutral damage. Similarly to other Rock-types, Relicanth has outstanding physical bulk, which, when combined with its Rock typing, allows it to offensively check various threats such as Tauros, Scyther, and Kangaskhan. Unfortunately, Relicanth is weak to common attacking types such as Grass and Fighting from the likes of Lilligant and Hariyama. It also faces competition from other Water- and Rock-types such as Samurott, Omastar, and Barbaracle, all of which are either more versatile or simply faster. A very mediocre Speed stat is a significant hindrance for Relicanth as well, given that it is outsped by nearly all offensive Pokemon and a handful of defensive Pokemon. Contrary to its great physical bulk, Relicanth's Special Defense is rather lacking, meaning that even some resisted hits such as Swellow's Boomburst will deal significant damage. Lastly, most of Relicanth's moves outside of Head Smash are of relatively average Base Power, which can hurt its consistency.