Yveltal

One of the more underrated defensive choices the Balanced Hackmons metagame has to offer, Yveltal stands out as one of the best checks to Mega Gengar and other Ghost-type Judgment users in the metagame due to its unique typing. Yveltal also functions as an excellent stallbreaker thanks to its great Speed tier, allowing it to outspeed common uninvested base 90 and 95 Speed Pokemon in the metagame and Taunt them. In addition, Yveltal's relatively high offensive stats for a wall mean it isn't as passive as most other walls, and its Dark STAB type makes Yveltal one of the few walls that can take advantage of Knock Off as both a primary attack and a utility move in addition to being able to absorb it as well. However, while Yveltal's bulk is not terrible, it isn't exceptional either, meaning Yveltal must more often than not rely on its typing in order to wall foes. Due to this downside, which means that it can only wall specific Pokemon, Yveltal isn't an ideal choice on most offensive teams as a wall, and it is better used with a defensive core on more defensively oriented teams. In addition, a weakness to Rock-type moves means Yveltal cannot perform as well when Stealth Rock is on the field, and weaknesses to Electric, Ice, and Fairy-type moves mean it cannot stand up to most Refrigerate and Pixilate users.