Glastrier

Glastrier's defining role is that of a bulky physical wallbreaker. It has outstanding bulk for ZU; furthermore, its stellar base 145 Attack, Icicle Crash, and all the coverage it needs including Close Combat and High Horsepower make it extremely difficult to switch into. Lastly, Glastrier can boost its Attack even further with Swords Dance, allowing it to potentially OHKO or 2HKO almost the entire metagame. Defensive staples like Snorlax and Dipplin are often forced to Terastallize or switch out versus it. This means that Glastrier's most reliable defensive counterplay is somewhat specific, being limited to almost exclusively Regirock and Orthworm, none of which have reliable recovery, and the latter two of which often require Terastallization to fully check Glastrier.