I've found regenerator slowbro to be the greatest physical wall I've ever used, but have had major difficulty creating a decent deffensive core for it. In the end I realized there was no choic but to create a 3 pokemon core to create perfect synergy.
Slowbro-regenerate, leftovers
(Courage)
Bold, 252HP, 252Def, 4SpA
scald
ice beam
toxic
slack off
What I'd call the physical wall to end all physical walls. It takes dragon danced attacks on a regular basis, and toxic stalls other walls to death. Not only that, but it regernerates significant portions of HP, allowing it to effectively have as much as double it's actualy hit points. The only problem with it is the ammount of weaknesses it carrys. While grass, electric, and ghost arn't the things physical walls will be taking anyhow, dark and bug are a problem. Scald is a no brainer for a "stall-wall," and Ice beam was put in for thos pesky gliscors who can't do a thing to fight back.
Virizion-Justified, leftovers
(Venta)
Calm, 252HP, 252SpD, 4SpA
Giga Drain
Focus Blast
Hidden Power Ice
Calm Mind
The need for a special deffender that could take those nasty grass and electric moves lead to a search for a decent grass type. The result was virizion, who not only resists those types, but is netural to bug and eats dark moves. The only problem here is that unlike slowbro, it lacks the amazing recovery, relying on giga drain for getting back HP. Synthesis is risky though with the prevalance of sandstorm. Calm mind allows it to better wall other bulky special attackers, and retaliate full force. Still, it's not much of an offensive force, and doesn't stall well.
Focus blast is powerful stab. Nuff sed.
Heatran-Flash Fire, leftovers
(Blastank)
Calm, 252HP, 252SpD, 4SpA
Lava Plume
Dragon Pulse
Toxic
Stealth Rock
The final peice of the puzzle, Heatran's fighting weakness is covered by Slowbro, while it's ground weakness is of no concern to the rest of the team, and may even end up being resisted by some of the offensive core, allowing a chance to slip in and sweep. Toxic is chosen over willowisp since it's not going to be switching in on many physcial attackers anyway. Lavaplume is kept on the off chance that burn is desired, and stealth rock can sometimes be thrown in during a forced switch. Dragon pulse let's it take out the dragons it walls so well, as well as being good coverage with a fire move.
Virizion and Heatran are both specially deffensive as Slowbro can take hits, leave, and come back to do it again. Overall, they seems to support Slowbro very well.
Scizor-Technician, Choice Band
(Red Angel)
Adamant, 248HP, 252Atk, 8Spe
Bullet Punch
Superpower
Pursuit
U-turn
The pokemon seems to fit in perfectly on the team, being wonderfuly deffended by Heatran's flash fire, and having plenty of opportunites to switch in for slowbro. Very standard Scizor moveset. I chose choiceband over swords dance, since a significant portion of the team is allready devoted to deffense, and instant hits are needed. (If that's bad reasoning, someone stop me)
After that it gets kind of iffy... I'm not entirely sure what offensive pokes fit into this team.... I gave some random guesses.
Zapdos-Pressure, life orb(lightingrod would be nice but... DW is so... ew)
(Tempest)
Timid, 8HP, 252SpA, 252Spe
Thunderbolt
Extrasensory
Hiddenpower Ice
Roost
Not really all that fancy, it was chosen for ground, grass, bug and fighting resist, possibly allowing it a switch in. Lightningrod would make it even better, but things get messy when you go dreamworld. Decent movepool for coverage choices. Thunderbolt is obligatory stab, and HP ice always gives good coverage. Extrasensory is there for the sole reason that not having at least one decent psychic move on a team has screwed me over too many times in the past. Roost is recovery, and can be a life saver with life orb.
Hydreigon-Levitate, Life orb
(Yokai)
Timid, 8HP, 252SpA, 252Spe
Draco Meteor
Dark Pules
Flame Thrower
Focus Blast
Mostly a leftover from a previous version of the team, Hydreigon can still serve his purpose well on occasion. His resists allow him a chance to occasionaly switch in for slowbro or Heatran, and his movepool gets very good coverage, tearing up ferrothorns and the like. Dark pulse is stab, while draco meteor allows it to take out something when you don't feel like waiting. Focus blast is always a nice surprise. I'm considering swithing him out for Aerodactyl.
The Deffensive core:
Slowbro-regenerate, leftovers
Bold, 252HP, 252Def, 4SpA
scald
ice beam
toxic
slack off
What I'd call the physical wall to end all physical walls. It takes dragon danced attacks on a regular basis, and toxic stalls other walls to death. Not only that, but it regernerates significant portions of HP, allowing it to effectively have as much as double it's actualy hit points. The only problem with it is the ammount of weaknesses it carrys. While grass, electric, and ghost arn't the things physical walls will be taking anyhow, dark and bug are a problem. Scald is a no brainer for a "stall-wall," and Ice beam was put in for thos pesky gliscors who can't do a thing to fight back.
Virizion-Justified, leftovers
Calm, 252HP, 252SpD, 4SpA
Giga Drain
Focus Blast
Hidden Power Ice
Calm Mind
The need for a special deffender that could take those nasty grass and electric moves lead to a search for a decent grass type. The result was virizion, who not only resists those types, but is netural to bug and eats dark moves. The only problem here is that unlike slowbro, it lacks the amazing recovery, relying on giga drain for getting back HP. Synthesis is risky though with the prevalance of sandstorm. Calm mind allows it to better wall other bulky special attackers, and retaliate full force. Still, it's not much of an offensive force, and doesn't stall well.
Focus blast is powerful stab. Nuff sed.
Heatran-Flash Fire, leftovers
Calm, 252HP, 252SpD, 4SpA
Lava Plume
Dragon Pulse
Toxic
Stealth Rock
The final peice of the puzzle, Heatran's fighting weakness is covered by Slowbro, while it's ground weakness is of no concern to the rest of the team, and may even end up being resisted by some of the offensive core, allowing a chance to slip in and sweep. Toxic is chosen over willowisp since it's not going to be switching in on many physcial attackers anyway. Lavaplume is kept on the off chance that burn is desired, and stealth rock can sometimes be thrown in during a forced switch. Dragon pulse let's it take out the dragons it walls so well, as well as being good coverage with a fire move.
Virizion and Heatran are both specially deffensive as Slowbro can take hits, leave, and come back to do it again. Overall, they seems to support Slowbro very well.
The offensive core:
Scizor-Technician, Choice Band
Adamant, 248HP, 252Atk, 8Spe
Bullet Punch
Superpower
Pursuit
U-turn
The pokemon seems to fit in perfectly on the team, being wonderfuly deffended by Heatran's flash fire, and having plenty of opportunites to switch in for slowbro. Very standard Scizor moveset. I chose choiceband over swords dance, since a significant portion of the team is allready devoted to deffense, and instant hits are needed. (If that's bad reasoning, someone stop me)
After that it gets kind of iffy... I'm not entirely sure what offensive pokes fit into this team.... I gave some random guesses.
Zapdos-Pressure, life orb(lightingrod would be nice but... DW is so... ew)
Timid, 8HP, 252SpA, 252Spe
Thunderbolt
Extrasensory
Hiddenpower Ice
Roost
Not really all that fancy, it was chosen for ground, grass, bug and fighting resist, possibly allowing it a switch in. Lightningrod would make it even better, but things get messy when you go dreamworld. Decent movepool for coverage choices. Thunderbolt is obligatory stab, and HP ice always gives good coverage. Extrasensory is there for the sole reason that not having at least one decent psychic move on a team has screwed me over too many times in the past. Roost is recovery, and can be a life saver with life orb.
Hydreigon-Levitate, Life orb
Timid, 8HP, 252SpA, 252Spe
Draco Meteor
Dark Pules
Flame Thrower
Focus Blast
Mostly a leftover from a previous version of the team, Hydreigon can still serve his purpose well on occasion. His resists allow him a chance to occasionaly switch in for slowbro or Heatran, and his movepool gets very good coverage, tearing up ferrothorns and the like. Dark pulse is stab, while draco meteor allows it to take out something when you don't feel like waiting. Focus blast is always a nice surprise. I'm considering swithing him out for Aerodactyl.