Scrafty
Type: Dark / Fighting
Base Stats: 65 HP / 90 Atk / 115 Def / 45 SpAtk / 115 SpDef / 58 Spe
Abilities: Shed Skin / Moxie / Intimidate
While the introduction of Fairy-type Pokemon may have made Scrafty's life much more difficult, he is still a very potent attacker in OU. One of Scrafty's best new options is an Assault Vest set. This set abuses Scarfy's good bulk and healing move in Drain Punch to function as a good special tank. Scrafty also has access to two boosting moves in Bulk Up and Dragon Dance, meaning Scrafty can also function as a versatile sweeper. His first set-up option, Bulk Up, allows him to boost both not only his Attack, but his Defense as well. With some Special Defensive investment and Rest, Scrafty can use it's already good bulk to turn itself into a pseudo-Suicune, being very hard to take down without a critical hit. His other boosting option, Dragon Dance, sacrifices bulk for speed, and makes Scrafty a fast and powerful attacker. Knock Off is a great attacking option on all sets, as it's not only powerful, but it also removes the opponent's item as well. Drain Punch is the STAB move of choice on the Assault Vest and Bulk Up set in order to recover HP, while High Jump Kick is a better option on the Dragon Dance set for more power. Bulk Up Scrafty runs Rest in order to keep itself healthy, while the Assault Vest and Dragon Dance sets prefer another coverage move, such as Poison Jab or Ice Punch. Assault Vest Scarfty can also utilize Pursuit to pursuit-trap Pokemon such as Celebi. Finally, Scrafty can use it's abilities very well; Intimidate can cripple physical attackers on the Assault Vest set, Shed Skin can cure Sleep on the Bulk Up set, or use Moxie can accumulate attack boosts on the Dragon Dance set. Overall, while the amnipresence of Florges in UU may make Scrafty's life hard, access to Assault Vest and a buffed Knock Off have helped make Scrafty a prominent threat in UU.
Celebi
Type: Psychic / Grass
Base Stats: 100 HP / 100 Atk / 100 Def / 100 SpA / 100 SpDef / 100 Spe
Ability: Natural Cure
Thanks to its good all-around stats, expansive movepool, and useful defensive typing, Celebi is a great defensive Grass-type in UU. The first thing many people see when they look at Celebi's Psychic/Grass typing is its seven weaknesses. However, many people often overlook Celebi's equally good six resistances, which allow it to function as a good answer to the many Electric- Water-, Grass-, and Psychic-type Pokemon in UU, such as Mega Manetric, Jolteon, Starmie, Shaymin, and Gardevoir. Looking at Celebi's movepool, it has access to the ever-important Recover, as well as helpful support moves such as Thunder Wave, Perish Song, Stealth Rocks, Heal Bell, Baton Pass, and Toxic, meaning it has many ways it can annoy the opponent and support the team. Its all-around balanced stats make Celebi very bulky, allowing it to tank even super-effective coverage moves, such as Overheat from Mega Manetric. It's good offensive stats also mean it can't isn't set-up bait for Pokemon such as Cloyster or Heracross. Finally Natural Cure is a very helpful ability, as it makes Celebi a reliable status absorber for any team. Overall, Celebi has many advantages traits that allow it to function as great wall in UU.