Supporter:
Forretress @ Macho Brace
IV's: 0 Speed
Relaxed Nature
252 Def/252 Hp/6 SpD
-Spikes
-Gyro Ball
-Rapid Spin/ Earthquake
-Explosion
Now you may be wondering: "Why did you make these changes?" Forretress normally with this set has 104 speed with 31 IV's in it. Make it 0, and it comes out to be 76. Now put the Macho Brace on, and you have 38 speed. Considering the equation for Gyro Ball, If we had a Gengar who was Scarfed, and hit 525 Speed, here is how it would go:
1+round(25*525/38)
Which means total we would have: 346.39. Of course, Gyro Ball hits up to 150 BP Max, so it would hit 150 everytime with ScarfGar. Also, Stab comes into play too. 150*1.5= 225 damage total. Its up to you if you want any ev's to go into attack, as it might be more damaging. :D
Support Tank:
Cresselia @ Flame Orb
Calm Nature
252 Hp/
160 Def/
96 SpD
-Psycho Shift
-Trick
-Rest
-Ice Beam
I havent checked out this set up, but it looks like it might work. Let me know.
Sweeper:
Mild Nature
40 Atk/216 SpA/252 Spe
-Close Combat
-Stone Edge
-Dark Pulse
-Hidden Power (Ice)
This is your replacement for Gyarados, and for Gallade. Why, lets take a look:
Gallade: 68 HP, 125 Atk, 65 Def, 65 SpA, 115 SpD, 80 Spe
Lucario: 70 HP, 110 Atk, 70 Def, 115 SpA, 70 SpD, 90 Spe
As you can see, Lucario has 2 points higher in HP Base than Gallade. He also has 5 points more in base Defense too. His SpA is far greater, and has 10 points higher than Gallade in Speed. Bad news is, 15 points lower than Gallade in Atk, 45 points far lower than Gallade in SpD. But thats all there really is. I feel Lucario is a better choice. This set gives you 418 Speed, allowing you to outspeed Tyranitars and Heatrans. (I think.)