Aggron

Aggron's power is often overwhelming due to Head Smash and its high Attack stat, especially when using a Choice Band. This offensive presence is what allows it to threaten two of the bulkiest Pokemon in the tier, Musharna and Mega Audino, without losing any offensive merit versus other slow threats. The ability Rock Head allows Aggron to repeatedly use Head Smash against slower targets without suffering recoil damage, which allows it to flourish against slow teams, often picking up multiple KOs. However, Aggron has a weak matchup versus offense due to its low Speed and typing, leaving it weak to common Fighting- and Ground-type moves, which are commonly carried as extra coverage by Normal-type Pokemon. A low Special Defense stat also keeps Aggron from using its resistances. This is especially noticeable against Ice- and Normal-types, as they can muscle past Aggron or have appropriate coverage to hit it hard. Aggron also occupies the Rock- and Steel-type slot on a team while not effectively checking Normal- or Flying-types, stacking defensive weaknesses.