So...this is my current OU team. I got some potential replacements listed at the bottom.
Edit: Added some small descriptions for roles of each pokemon
Mienshao @ Choice Scarf
Ability: Regenerator
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- U-turn
- High Jump Kick
- Stone Edge
- Poison Jab
Mienshao is great as a lead 90% of the time being able to fit the role of a Sweeper, Non-Priority Revenge Killer, or Scouter. Jolly is there to outspeed most non-scarf users and some scarf users, and regenerator helps if Hi Jump Kick misses or is used on a switched in ghost type.
Jolteon @ Leftovers
Ability: Volt Absorb
EVs: 4 Def / 252 SAtk / 252 Spd
Timid Nature
- Substitute
- Thunderbolt
- Baton Pass
- Hidden Power [Ice]
Jolteon has a bit of a defensive role, but he has some offensive capabilities as well. He can use substitute on a predicted switch out and can then baton pass to Dragonite to possibly get an easy +2 DD. If not, he has Thunderbolt for STAB and HP Ice for coverage. Also, he can absorb some predicted Electric moves.
Blastoise @ Blastoisinite
Ability: Torrent
EVs: 252 HP / 252 SAtk / 4 SDef
Modest Nature
- Water Pulse
- Dark Pulse
- Roar
- Ice Beam
Blastoise is my mega of the team. With his bulk, he can take most hits as well as retaliate with an offense of his own. All his moves covers most pokemon so he doesn't get trapped. Roar is smacked in over Aura Sphere or Dragon Pulse because it stops those who try to get a defensive setup or offensive setup.
Espeon @ Light Clay
Ability: Magic Bounce
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Psychic
- Dazzling Gleam
- Light Screen
- Reflect
Espeon is a Dual Screen Magic Bouncer on this team, but with offensive capabilities as well. I don't always use screens hence why I opted for 252 Sp. Atk over HP or Defense. Psychic is for STAB and Dazzling Gleam is for coverage against Dark and Dragon types.
Forretress @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Def / 252 SDef
Careful Nature
- Stealth Rock
- Rapid Spin
- Counter
- Volt Switch
Forretress's role is the usual Hazard user and Rapid Spinner, but he can be a great revenge killer to ANY physical sweeper mind that no SR is out and he has full health. When his job is done, he either acts as a death fodder or just Volt Switches out.
Dragonite @ Lum Berry
Ability: Multiscale
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature
- Dragon Dance
- Dragon Claw
- Fire Punch
- Extreme Speed
Finally, here's one of the most overused physical sweepers in the game. I used one of the most common sets with Lum and its HA. His HA usually allows a free DD as well as Lum phases prankster users trying to slow him down. Fire punch is coverage for steel types and Extreme Speed is to outspeed priority users.
However, here are some potential replacements.
Lanturn @ Leftovers
Ability: Volt Absorb
EVs: 40 HP / 252 Def / 216 Spd
Calm Nature
- Thunder Wave
- Confuse Ray
- Thunderbolt
- Ice Beam
Possibly replace Jolteon as a more Bulky / Annoyer role
He's running a Smogon set to be a bulky annoyer with only Volt Switch opted out for Thunderbolt since I wasn't sure what I should use. He has volt absorb to take lightning moves just like Jolteon. The only problem with this pokemon is his offensive capabilities are not really great so after he Paralyzes and Confuses, he can only whittle down the hp's health slowly.
Scolipede @ Focus Sash
Ability: Speed Boost
EVs: 252 HP / 34 SDef / 224 Spd
Jolly Nature
- Megahorn
- Swords Dance
- Baton Pass
- Protect
Possibly replace Forretress to pass on attack and speed buffs to Dragonite or Mienshao
This is another common set, but it's pretty fun to use sometimes. Main goal is to pass on to either Mienshao or Dragonite and start a full scale sweep. If he can't pass onto either of them, he can just start attacking on his own with Megahorn. It replaces Forretress because I believe it would have a little more utility (with the exception of not using hazards or unable to use RS).
Here is another addition I just recently thought of:
Mandibuzz (F) @ Focus Sash
Ability: Overcoat
EVs: 252 HP / 252 SDef / 4 Spd
Careful Nature
- Foul Play
- Roost
- Taunt
- Defog
If I do run Scolipede, it can replace Espeon as a hazard remover / sweeper counter
Finally, if Scolipede is used, Mandibuzz can replace Espeon to deal with the problem of no rapid spinner. It can taunt a user, defog, then get out of there or stall. If needed, it can use Foul Play against any potential sweepers or Psychic / Ghost types. Defog doesn't hurt me since I don't have any hazards.
That's about it for now. Thanks in advance for any suggestions.
