Glalie

Mega Glalie is a potent wallbreaker thanks to its powerful Refrigerate-boosted STAB moves, solid offensive stats, and near-unresisted coverage between its Ice- and Ground-type attacks. Mega Glalie is also an excellent user of Spikes, as its ability to break past entry hazard removers such as Golbat, Silvally-Steel, and Dhelmise as well as threaten Xatu allows it to easily set them up and keep them on the field. A great Speed tier significantly bolsters Mega Glalie's matchup against offensive teams, letting it get the jump on a plethora of unboosted offensive Pokemon like Magmortar, Rotom, and Sigilyph. Unfortunately, Mega Glalie's mediocre bulk and defensive typing hold it back, as it sports weaknesses to common Fire-, Fighting-, and Steel-types such as Incineroar, Passimian, and Steelix. In particular, its weakness to all entry hazards in conjunction with Double-Edge's recoil makes Mega Glalie easy to wear down, leaving it susceptible to revenge killers such as Sceptile, Heliolisk, and Choice Scarf Passimian. Mega Glalie also struggles to break through common defensive Water-types such as Slowking, Vaporeon, and Blastoise given their resistance to Double-Edge and the negligible damage they take from Earthquake.