Tauros

With its combination of power, Speed, and movepool, Tauros shines as a wallbreaker, revenge killer, and lead. Just like in OU, Tauros's powerful Normal-type STAB moves and complementary coverage coupled with its high critical hit rate make it difficult to switch into and almost impossible to fully stonewall. While its bulk is passable, it lacks resistances and instant recovery, so it offers very little defensive value to a team. Also, the bulkier metagame of Ubers blunts Tauros's edge; the mandatory Mew and Mewtwo can withstand its hits and either retaliate hard or cripple it with paralysis, forcing it out. Tauros is therefore less valued, though this frees it to be used much more aggressively, as it isn't critical to preserve Tauros for late-game.