So one day, I decided to make a team surrounding a Subpetaya Empoleon sweep. That's all of the backstory.
Team building process:
Well, I started out with Empoleon, because that's what I wanted to centralize it around.
Empoleon is stopped by Blissey (the fatass that she is). Obviously, a Fighting type Pokemon would be helpful. Looking at the counters list for Blissey, Machamp, Heracross, Lucario, Scizor, and others all countered her. Machamp never really worked well in my past teams, so that's gone. Heracross is a bit too slow for my likings, and Scarf would limit my options. I didn't want a second sweeper, so Lucario was out. Scizor would be helpful, but wouldn't my Blissey problems yet.
I continued looking down until I saw Infernape. It's base 108 speed was what I had in mind, so onto the team it went.
Afterwards, I looked at the Empoleon analysis. Empoleon prefers Paralysis on the opponent, and since I wanted to run Ice Beam over Grass Knot, I also needed something to take down bulky waters. Only one real Pokemon fit this requirement: Celebi. It also pairs well with Empoleon resistance-wise.
Next, I wanted something to apply pressure onto the opponent. Scizor immediately came to mind, with STAB Technician Bullet Punch and STAB U-turn.
I needed a rock resist besides Empoleon, otherwise a Ttar would deal quite a bit to my team. There are few bulky fighting Pokemon viable in OU, so no fighting Pokemon for that job. No steel types either because that would leave me with 3 ground weak Pokemon (Infernape, Empoleon, and the steel). That left me with ground.
Mamoswine was dual typed, so it's neutral to rock types. Same goes with Gliscor. Rhyperior was too slow for my liking. Flygon and Dugtrio aren't walls, which left Swampert, Donphan, and Hippowdon. Donphan is terrible, and I didn't want sandstorm on my team, so no Hippo. That left Swampert, which I put into the lead spot.
Last but not least, I wanted something that could revenge kill and apply pressure onto the opponent. Scarfed Flygon came to mind, and it also provides a useful ground resist.
And there's my team. Now for the in-depth part! Bold indicates changed parts.
Swampert (M) @ Leftovers
Ability: Torrent
EVs: 240 HP/216 Def/52 SAtk
Relaxed nature (+Def, -Spd)
- Earthquake: STABed attacks for steels.
- Ice Beam: To take down any dragons.
- Surf: STABed attack, very useful for attacking.
- Stealth Rock: To provide residual damage.
My lead, Swampert. It's a reliable lead, as it is very bulky and can set up Stealth Rocks. It also provides a useful Rock and Fire resistance. This is the MixPert set from the analysis, and it works wonders. Allows for residual damage.
Roles:
Rock and Fire resistance.
Sets up Stealth Rock.
General Physical wall.
Grass attacks go to Celebi, Flygon, and Infernape.
Scizor (M) @ Choice Band
Ability: Technician
EVs: 248 HP/252 Atk/8 Spd
Adamant nature (+Atk, -SAtk)
- U-turn: Scouts enemy team, also causes switches.
- Bullet Punch: Obligatory STAB, also useful for revenge killing.
- Superpower: Useful for Blissey and steel types.
- Pursuit: In case of switching Blisseys or ghosts.
Surprisingly enough, this is my secondary harasser (Flygon is my first with SR resistance). It provides handy revenge killings for my team, and can rack up residual damage with U-turn. Once it weakens/kills enough of the opponent's team, then Empoleon comes in and sets up.
Roles:
Revenge killer.
Damage dealer.
Fire attacks go to Swampert, Flygon, and Infernape.
Flygon (M) @ Choice Scarf
Ability: Levitate
EVs: 4 HP/252 Atk/252 Spd
Adamant nature (+Atk, -SAtk)
- Earthquake: More STAB to get rid of Steels/other things that are weak to ground.
- Outrage: More STAB in case I need the power.
- Stone Edge: Something to get rid of flyers.
- U-turn: Residual damage and causes switches.
My main annoyer, as it can outspeed many things. Max speed EVs are there so it can at least tie with +1 speed base 100s, and outspeeds any other Flygons that don't run max speed EVs with a Scarf. It's speed allows me to kill Empoleon's problems, and to mainly cause damage.
Roles:
Annoyer.
Damage dealer.
Revenge killer.
Ice attacks go to Swampert, Scizor, Empoleon, and Infernape.
Dragon attacks go to Scizor and Empoleon.
Celebi @ Life Orb
Ability: Natural Cure
EVs: 232 HP/32 Spd/244 SAtk
Modest nature (+SAtk, -Atk)
- Thunder Wave: Provides paralysis for Empoleon to sweep.
- Leaf Storm: Rids the team of bulky waters.
- Hidden Power [Fire]: Kills unsuspecting Scizors that thinks they can U-turn out.
- Recover: Heals off damage taken from Life Orb.
Tinkerbell is amazing, providing what this team really needs: Paralysis and a way to take out bulky waters. Celebi and Empoleon have many resistances with each other. Thunder Wave is my main paralysis support for Empoleon to begin its sweep. Leaf Storm is necessary for bulky waters. Recover over Rest because I don't want to have to switch out after I heal, as that would cause problems for me.
God I wish Shaymin learned Stun Spore...
Roles:
Bulky water taker outer.
Paralysis support.
Bug attacks go to Scizor, Empoleon, and Infernape.
Lol Flying attacks (go to Empoleon).
Lol Poison attacks (go to Empoleon and Scizor).
Ghost attacks go to Empoleon and Scizor.
Fire attacks go to Swampert and Flygon.
Ice attacks go to Swampert, Scizor, and Infernape.
Dark attacks go to Infernape, Empoleon, and Scizor.
Infernape (M) @ Life Orb
Ability: Blaze
EVs: 64 Atk/192 Spd/252 SAtk
Naive nature (+Spd, -SDef)
- Fire Blast: Useful Fire STAB for those that are weak to it.
- Close Combat: Main Blissey killer, also has 100% accuracy.
- Grass Knot: Useful for bulky waters.
- Hidden Power [Ice]: Useful for unboosted dragons.
My Infernape is my main Blissey solution, as Close Combat is a clean OHKO. With its base 108 speed, it can outspeed base 100s and attack/kill them before they can do the same to Infernape. Grass Knot is for in case Celebi fails to take out those bulky waters, while HP Ice is for dragons.
Roles:
Blissey solution.
Secondary damage dealer with its wide coverage.
Lol Flying attacks (go to Empoleon).
Ground attacks go to Flygon and Celebi.
Water attacks go to Celebi and Flygon.
Psychic attacks go to Celebi, Scizor, and Empoleon.
Empoleon (M) @ Petaya Berry
Ability: Torrent
EVs: 12 HP/12 Def/232 Spd/252 SAtk
Modest nature (+SAtk, -Atk)
- Agility: To outspeed most things in its path (except for random scarfers).
- Substitute: To sub down to Torrent and Petaya range, also to block statuses.
- Surf: STAB + Petaya + Torrent = Ouch.
- Ice Beam: Something for dragons.
Finally, the star of the show! Ice Beam vs Grass Knot was a tough choice, but Empoleon can take a +1 Outrage from Salamence and be in perfect range for a Petaya Berry. Also, with 2 grass attacks on Celebi and Infernape, my only problem would be Vaporeon, whom Empoleon can't do much against anyway.
Roles:
Sweeper.
Resistancer (though I don't use him for that).
Electric goes to Swampert, Flygon, and Celebi.
Fighting goes to Celebi.
Ground goes to Flygon and Celebi.
And there's my team. Sometimes, I can get a win without even having Empoleon appear. Other times, that's what clinches it for me.
Problems with this team:
Hail stall: Only one match, but that guy was smart.
Random leads with enough special attack to OHKO Swampert: No SR or rock resistance or random attacks.
Fighting moves: I realized when I typed this RMT that I only have 1 fighting resist. I usually deal with them fast enough beforehand though.
Go ahead, RMT!
Team building process:
Well, I started out with Empoleon, because that's what I wanted to centralize it around.

Empoleon is stopped by Blissey (the fatass that she is). Obviously, a Fighting type Pokemon would be helpful. Looking at the counters list for Blissey, Machamp, Heracross, Lucario, Scizor, and others all countered her. Machamp never really worked well in my past teams, so that's gone. Heracross is a bit too slow for my likings, and Scarf would limit my options. I didn't want a second sweeper, so Lucario was out. Scizor would be helpful, but wouldn't my Blissey problems yet.
I continued looking down until I saw Infernape. It's base 108 speed was what I had in mind, so onto the team it went.


Afterwards, I looked at the Empoleon analysis. Empoleon prefers Paralysis on the opponent, and since I wanted to run Ice Beam over Grass Knot, I also needed something to take down bulky waters. Only one real Pokemon fit this requirement: Celebi. It also pairs well with Empoleon resistance-wise.



Next, I wanted something to apply pressure onto the opponent. Scizor immediately came to mind, with STAB Technician Bullet Punch and STAB U-turn.




I needed a rock resist besides Empoleon, otherwise a Ttar would deal quite a bit to my team. There are few bulky fighting Pokemon viable in OU, so no fighting Pokemon for that job. No steel types either because that would leave me with 3 ground weak Pokemon (Infernape, Empoleon, and the steel). That left me with ground.
Mamoswine was dual typed, so it's neutral to rock types. Same goes with Gliscor. Rhyperior was too slow for my liking. Flygon and Dugtrio aren't walls, which left Swampert, Donphan, and Hippowdon. Donphan is terrible, and I didn't want sandstorm on my team, so no Hippo. That left Swampert, which I put into the lead spot.





Last but not least, I wanted something that could revenge kill and apply pressure onto the opponent. Scarfed Flygon came to mind, and it also provides a useful ground resist.






And there's my team. Now for the in-depth part! Bold indicates changed parts.

Swampert (M) @ Leftovers
Ability: Torrent
EVs: 240 HP/216 Def/52 SAtk
Relaxed nature (+Def, -Spd)
- Earthquake: STABed attacks for steels.
- Ice Beam: To take down any dragons.
- Surf: STABed attack, very useful for attacking.
- Stealth Rock: To provide residual damage.
My lead, Swampert. It's a reliable lead, as it is very bulky and can set up Stealth Rocks. It also provides a useful Rock and Fire resistance. This is the MixPert set from the analysis, and it works wonders. Allows for residual damage.
Roles:
Rock and Fire resistance.
Sets up Stealth Rock.
General Physical wall.
Grass attacks go to Celebi, Flygon, and Infernape.

Scizor (M) @ Choice Band
Ability: Technician
EVs: 248 HP/252 Atk/8 Spd
Adamant nature (+Atk, -SAtk)
- U-turn: Scouts enemy team, also causes switches.
- Bullet Punch: Obligatory STAB, also useful for revenge killing.
- Superpower: Useful for Blissey and steel types.
- Pursuit: In case of switching Blisseys or ghosts.
Surprisingly enough, this is my secondary harasser (Flygon is my first with SR resistance). It provides handy revenge killings for my team, and can rack up residual damage with U-turn. Once it weakens/kills enough of the opponent's team, then Empoleon comes in and sets up.
Roles:
Revenge killer.
Damage dealer.
Fire attacks go to Swampert, Flygon, and Infernape.

Flygon (M) @ Choice Scarf
Ability: Levitate
EVs: 4 HP/252 Atk/252 Spd
Adamant nature (+Atk, -SAtk)
- Earthquake: More STAB to get rid of Steels/other things that are weak to ground.
- Outrage: More STAB in case I need the power.
- Stone Edge: Something to get rid of flyers.
- U-turn: Residual damage and causes switches.
My main annoyer, as it can outspeed many things. Max speed EVs are there so it can at least tie with +1 speed base 100s, and outspeeds any other Flygons that don't run max speed EVs with a Scarf. It's speed allows me to kill Empoleon's problems, and to mainly cause damage.
Roles:
Annoyer.
Damage dealer.
Revenge killer.
Ice attacks go to Swampert, Scizor, Empoleon, and Infernape.
Dragon attacks go to Scizor and Empoleon.

Celebi @ Life Orb
Ability: Natural Cure
EVs: 232 HP/32 Spd/244 SAtk
Modest nature (+SAtk, -Atk)
- Thunder Wave: Provides paralysis for Empoleon to sweep.
- Leaf Storm: Rids the team of bulky waters.
- Hidden Power [Fire]: Kills unsuspecting Scizors that thinks they can U-turn out.
- Recover: Heals off damage taken from Life Orb.
Tinkerbell is amazing, providing what this team really needs: Paralysis and a way to take out bulky waters. Celebi and Empoleon have many resistances with each other. Thunder Wave is my main paralysis support for Empoleon to begin its sweep. Leaf Storm is necessary for bulky waters. Recover over Rest because I don't want to have to switch out after I heal, as that would cause problems for me.
God I wish Shaymin learned Stun Spore...
Roles:
Bulky water taker outer.
Paralysis support.
Bug attacks go to Scizor, Empoleon, and Infernape.
Lol Flying attacks (go to Empoleon).
Lol Poison attacks (go to Empoleon and Scizor).
Ghost attacks go to Empoleon and Scizor.
Fire attacks go to Swampert and Flygon.
Ice attacks go to Swampert, Scizor, and Infernape.
Dark attacks go to Infernape, Empoleon, and Scizor.

Infernape (M) @ Life Orb
Ability: Blaze
EVs: 64 Atk/192 Spd/252 SAtk
Naive nature (+Spd, -SDef)
- Fire Blast: Useful Fire STAB for those that are weak to it.
- Close Combat: Main Blissey killer, also has 100% accuracy.
- Grass Knot: Useful for bulky waters.
- Hidden Power [Ice]: Useful for unboosted dragons.
My Infernape is my main Blissey solution, as Close Combat is a clean OHKO. With its base 108 speed, it can outspeed base 100s and attack/kill them before they can do the same to Infernape. Grass Knot is for in case Celebi fails to take out those bulky waters, while HP Ice is for dragons.
Roles:
Blissey solution.
Secondary damage dealer with its wide coverage.
Lol Flying attacks (go to Empoleon).
Ground attacks go to Flygon and Celebi.
Water attacks go to Celebi and Flygon.
Psychic attacks go to Celebi, Scizor, and Empoleon.

Empoleon (M) @ Petaya Berry
Ability: Torrent
EVs: 12 HP/12 Def/232 Spd/252 SAtk
Modest nature (+SAtk, -Atk)
- Agility: To outspeed most things in its path (except for random scarfers).
- Substitute: To sub down to Torrent and Petaya range, also to block statuses.
- Surf: STAB + Petaya + Torrent = Ouch.
- Ice Beam: Something for dragons.
Finally, the star of the show! Ice Beam vs Grass Knot was a tough choice, but Empoleon can take a +1 Outrage from Salamence and be in perfect range for a Petaya Berry. Also, with 2 grass attacks on Celebi and Infernape, my only problem would be Vaporeon, whom Empoleon can't do much against anyway.
Roles:
Sweeper.
Resistancer (though I don't use him for that).
Electric goes to Swampert, Flygon, and Celebi.
Fighting goes to Celebi.
Ground goes to Flygon and Celebi.
And there's my team. Sometimes, I can get a win without even having Empoleon appear. Other times, that's what clinches it for me.
Problems with this team:
Hail stall: Only one match, but that guy was smart.
Random leads with enough special attack to OHKO Swampert: No SR or rock resistance or random attacks.
Fighting moves: I realized when I typed this RMT that I only have 1 fighting resist. I usually deal with them fast enough beforehand though.
Go ahead, RMT!