Steelix

Large, silver, and sleek, stare in awe at Steelix. That menacing grin is not only for show, as Steelix practically laughs at half of the tier for the pittance in damage it receives. A reliable Steel / Ground typing gives it nine resistances and two immunities, while an astonishing base 200 Defense backed by a great base 75 HP makes Steelix one, if not THE, premier physical wall in the RU tier. With the proper EV investment, it can take both physical and special hits, being a great check or counter to threats such as Galvantula, Escavalier, and Aggron. Don't forget about Sturdy, which acts as a pseudo-Focus Sash. A godawful base 30 Speed and an average base 85 Attack are slightly concerning, but don't let that depress you; even that poor Speed is beneficial, as it enables Steelix to hit hard with Gyro Ball, an especially deadly move against various frail sweepers such as Sceptile. Steelix easily fits in with almost any team, ready to grin and bear the brunt of an opponent while setting up Stealth Rock on a whim!