Skarmory @ Leftovers
Sturdy
Impish/96 hp/252 def/158 spD
Roost, Stealth Rock, Drill Peck, Whirlwind
Generally, any physically attacking lead will be mostly walled by skarm. SO, for my first turn i almost always set up stealth rock. Then i will whirlwind and roost until i face a real threat, in which case i switch to one of my special walls (Snorlax/Blissey)
Snorlax @ Leftovers
Immunity (Will cause some Blisseys to waste a turn on Toxic, and prevents Bliss from effectively walling Snorlax)
Impish/64 hp/96 atk/252 def/96 spD
Earthquake, Fire Punch, Crunch, Curse
Generic Curselax, except i sacrifice recovery and STAB for more type coverage. With this coverage, i hit everything at least neutral. Fire is only resisted by Dragon, which Crunch can hit for neutral, Water, (Crunch/EQ), and Rock (EQ/Crunch). Also, fire punch is helpful for scizors that will try to set up with swords dance. Also a good special wall.
Blissey @ Leftovers
Natural Cure
Bold/196 hp/252 def/4 spd/56 spD
Softboiled/Thunder Wave/Ice Beam/Seismic Toss
Generic spA wall. Thunder Wave, then switch or seismic toss/ice beam.
Machamp @ Muscle Band
No Gaurd
Impish/252 hp/252 atk/6 spD
Dynamicpunch, Stone Edge, Earthquake, Bullet Punch
Physical sweeper. Stone Edge/EQ/Dynamic Punch present great type coverage, and bullet punch for finishing off fast opponents like aero/gengar.
Starmie @ Expert Belt
Natural Cure
Timid/252 spd/252 spA
Thunderbolt, Ice Beam, Surf, Grass Knot
Awesome coverage is great when combined with expert belt. Grass Knot is included over Psychic for Swampert, which can easily take the other attacks on this set. However, Grass Knot will easily OHKO swampert with the expert belt.
Lucario @ Focus Sash
Steadfast
Jolly/252 atk/6 def/252 spd
Swords Dance, Extremespeed, Bullet Punch, Close Combat
Swords Dance up, and simply attack with bp/es/cc. Use Close Combat on anything like Bronzong or Registeel; after a swords dance Close Combat will usually OHKO both of them (maybe not if serious EVs are put into defense, however). Watch out for anything that could possibly be scarfed, and extremespeed or bullet punch those few pokemon. Watch out for whirlwind/roar, and status, because that can potentially mess up the entire strategy-note-(metagross will wall this set if it has decent Def evs, it may run into sllight problems with a SD'd close combat, but will easily OHKO with eq unless focus sash is still intact)
Team Strategy:
Usually, i will switch back and forth between Skarmory and Blissey depending on the situation to rack up damage from stealth rock. Once a decent amount of damage has occurred, i switch my Snorlax into either a not very effective move, or a weak special attack. I will curse up, until i have gotten 2-3 Curses. Then, i will attempt a sweep until Snorlax dies. Subsequently, I will switch Skarmory/Blissey in, and try to stall out a few pokemon on the opponents team, and cripple them with thunder wave. When one my opponents pokemon has no way of seriously damaging my Starmie/Lucario/Machamp, or i predict a switch, i will attempt to sweep the rest of their team. For revenge kills, i use my muscle-banded bullet punch from Machamp. (would Life Orb be better?)
Sturdy
Impish/96 hp/252 def/158 spD
Roost, Stealth Rock, Drill Peck, Whirlwind
Generally, any physically attacking lead will be mostly walled by skarm. SO, for my first turn i almost always set up stealth rock. Then i will whirlwind and roost until i face a real threat, in which case i switch to one of my special walls (Snorlax/Blissey)
Snorlax @ Leftovers
Immunity (Will cause some Blisseys to waste a turn on Toxic, and prevents Bliss from effectively walling Snorlax)
Impish/64 hp/96 atk/252 def/96 spD
Earthquake, Fire Punch, Crunch, Curse
Generic Curselax, except i sacrifice recovery and STAB for more type coverage. With this coverage, i hit everything at least neutral. Fire is only resisted by Dragon, which Crunch can hit for neutral, Water, (Crunch/EQ), and Rock (EQ/Crunch). Also, fire punch is helpful for scizors that will try to set up with swords dance. Also a good special wall.
Blissey @ Leftovers
Natural Cure
Bold/196 hp/252 def/4 spd/56 spD
Softboiled/Thunder Wave/Ice Beam/Seismic Toss
Generic spA wall. Thunder Wave, then switch or seismic toss/ice beam.
Machamp @ Muscle Band
No Gaurd
Impish/252 hp/252 atk/6 spD
Dynamicpunch, Stone Edge, Earthquake, Bullet Punch
Physical sweeper. Stone Edge/EQ/Dynamic Punch present great type coverage, and bullet punch for finishing off fast opponents like aero/gengar.
Starmie @ Expert Belt
Natural Cure
Timid/252 spd/252 spA
Thunderbolt, Ice Beam, Surf, Grass Knot
Awesome coverage is great when combined with expert belt. Grass Knot is included over Psychic for Swampert, which can easily take the other attacks on this set. However, Grass Knot will easily OHKO swampert with the expert belt.
Lucario @ Focus Sash
Steadfast
Jolly/252 atk/6 def/252 spd
Swords Dance, Extremespeed, Bullet Punch, Close Combat
Swords Dance up, and simply attack with bp/es/cc. Use Close Combat on anything like Bronzong or Registeel; after a swords dance Close Combat will usually OHKO both of them (maybe not if serious EVs are put into defense, however). Watch out for anything that could possibly be scarfed, and extremespeed or bullet punch those few pokemon. Watch out for whirlwind/roar, and status, because that can potentially mess up the entire strategy-note-(metagross will wall this set if it has decent Def evs, it may run into sllight problems with a SD'd close combat, but will easily OHKO with eq unless focus sash is still intact)
Team Strategy:
Usually, i will switch back and forth between Skarmory and Blissey depending on the situation to rack up damage from stealth rock. Once a decent amount of damage has occurred, i switch my Snorlax into either a not very effective move, or a weak special attack. I will curse up, until i have gotten 2-3 Curses. Then, i will attempt a sweep until Snorlax dies. Subsequently, I will switch Skarmory/Blissey in, and try to stall out a few pokemon on the opponents team, and cripple them with thunder wave. When one my opponents pokemon has no way of seriously damaging my Starmie/Lucario/Machamp, or i predict a switch, i will attempt to sweep the rest of their team. For revenge kills, i use my muscle-banded bullet punch from Machamp. (would Life Orb be better?)