Zapdos

While Zapdos may not have the offensive prowess of its Electric / Flying relative Thundurus, Zapdos is capable of using its typing defensively, boasting respectable 90 / 85 / 90 bulk, solid recovery in Roost, an immunity to paralysis that allows it to check Thunder Wave users such as Klefki with ease, and the abilities Static and Pressure, all of which rare and useful for a defensive Pokemon in Battle Spot Singles. While its defenses aren't on par with those of walls such as Porygon2, Suicune, and Cresselia and its typing can be exploited by common Ice- and Rock-type moves, Zapdos boasts a respectable base 125 Special Attack and access to moves such as Heat Wave and Toxic. This allows Zapdos to function as an effective check to Pokemon such as Excadrill, Salamence, Lopunny, Azumarill, Talonflame, and Gyarados, carving a solid role for itself in Battle Spot Singles and fitting easily onto teams requiring a flexible defensive Pokemon to handle these threats.