Magneton

Because UU does not have the plethora of Steel-types that are found in OU, Magneton has a tough time proving its worth. But due to the prevalence of Registeel and Steelix in the UU environment, Magneton can fill a niche on teams that utilize hard-hitting Normal-, Dragon-, or Flying-type Pokemon by removing those Steel-type Pokemon from play with its ability, Magnet Pull. With a superb Special Attack stat, Magneton can also take the offensive by either boosting its Special Attack with Charge Beam or lowering the opponent's stats and forcing switches with Metal Sound. Magneton also has decent defenses as well as resistances to Dragon, Steel, Bug, Normal, Flying, Rock, Electric, and Ice, allowing it to form sturdy Substitutes and switch in against a wide variety of attacks.