Alright, Haxorus is staying! To think it's only the third of all retested Pokémon to return to UU... Anyway.
Haxorus -> S | I'll be straight-up here; Haxorus was a dominating force of UU Beta and for me, it's performed just as well in this new environment. Haxorus possesses an absolutely massive 147 Attack stat, enough to shred the whole tier a new asshole once it sets up. Speaking of setting up, Haxorus can go the sweeper
or the wallbreaker route depending on which boosting move it decides to use: Dragon Dance turns Haxorus into a formidable sweeper that combines extreme power with high Speed. If you have no Scarfer (or if you've lost it), you're pretty much down for the count. Swords Dance, on the other hand, makes Haxorus
unstoppably powerful, amounting to an Attack stat of 786 with a Jolly nature and
864 with Adamant. The best thing is that Haxorus can even run a Double Dance set that allows the player to freely adapt their Haxorus to the opponent's team: against faster, offensive teams, Dragon Dance is more favorable, while against the slower, more defensive teams, the axe dragon prefers to use Swords Dance. If the opportunity arises, Haxorus can even use
both boosting moves and turn the whole UU tier into nothing but a pile of rubble.
Now, what else makes Haxorus worthy of being S-Rank? Firstly, its ability to break through Pink Cores is virtually unmatched in the whole tier, being able to smash through Slowbro and Mew with Dragon Claw/Dual Chop and shredding Aromatisse with Poison Jab or even a boosted Earthquake. All it needs to do is set up and these cores are toast. Secondly, what makes Haxorus
even more dangerous than it already is is
its partnership with Hydreigon as a Dual Dragon core. I've brought this up before, but these two Unovan Dragon-types are partners in crime: either Haxorus wallbreaks bulky threats in order for Hydreigon to pull off a successful sweep or Hydreigon takes out the physically strong Pokémon to allow Haxorus to DD its way through the opposition. All one would need to complete this core is a Fairy resistor (such as Victini) and this core is pretty much impossible to stop if used well.
Of course, this beast isn't without its flaws. Haxorus's physical bulk is only alright and it's specially somewhat frail, having 76/90/70 defensive stats. Its 97 Speed can be a liability as well, since Scarf Hydreigon, the most popular Scarfer, outspeeds Haxorus by 1 base point. However, the plethora of good points Haxorus possesses more than make up for the few flaws it has, which all make it into one of the most lethal set-up sweepers in the UU tier.
Haxorus for S-Rank.