This is my first OU team, so basically I skimmed the list of OUs to see what good pokes there are for each position. My team basically has a setup of Lead/Special sweeper/Physical sweeper/Special wall/Physical wall/Filler. Plus I just picked the coolest looking ones (cause im n00bish like that.)
EDIT: replace lucario with infernape, aerodactyl with swampert, and dusknoir with rotom. tell me if thats a bad idea.
Swampert @ leftovers
Torrent
252 HP / 4 Atk / 252 Def
Relaxed nature
-Stealth Rock
-Earthquake
-Ice Beam
-Protect
This is my second choice for a lead. This is mainly to block that glaring electric weakness. Stealth rock is for spreading entry hazards, EQ is STAB, ice beam is for stopping dragon types, and protect is for scouting and stopping explosions.
Infernape @ life orb *
Blaze
252 Atk / 64 SpA / 192 Spe
Naive nature
-Close Combat
-U-turn
-Stone Edge
-Overheat
This is my second choice for a physical sweeper, though its actually the mixape moveset. Overheat is for STAB, and the adverse effects can be negated by u-turn. The same can be said for close combat. stone edge is for stopping things like gyarados.

Starmie @ life orb *
Natural Cure
136 HP / 156 Def / 216 Spe
Timid nature
-hydro pump
-Tbolt
-ice beam
-recover
This is my filler pokemon that I use to cover type weaknesses. Hydro pump is for STAB, which imo is better than surf because it does just a little bit more damage. Tbolt is for gyarados, and Ice beam is for dragon types. Recover is for, well recovering.

Blissey @ leftovers
Natural Cure
4 HP / 252 SpA / 252 Spe
Bold nature
-aromatherapy
-toxic
-flamethrower
-softboiled
This is my special wall. Aromatherapy is used to heal off those pesky statuses, toxic is for stalling while I wall any attacks, flamethrower is for whittling down the enemy's HP while I wall, and softboiled is to heal off any little damage I took, which when put together with leftovers, is a lot of HP gained back.

Togekiss @ leftovers
Serene Grace
252 HP / 152 SpA / 104 Spe
Modest nature
-air slash
-nasty plot
-aura sphere
-roost
This is what I chose as my special sweeper. Air slash is for STAB, which combined with serene grace, is pretty awesome, because the flinch rate is 60%. Nasty plot is to gain some extra power at the beginning, Aura sphere is coverage against the rock types, and Roost is to gain back any health I lost.
Rotom-C @ Leftovers
Levitate
248 HP / 168 Def / 92 Speed
Bold nature
-Thunderbolt
-Substitute
-Shadow Ball
-Will-O-Wisp
This is the second spin blocker that I chose. Shadow ball and Thunderbolt is for Stab, Will-o-wisp is for spreading burn, and substitute takes advantage of the opponent switching. I use cut because the opponent will probably switch into something grass resistant, and my team can meat most grass-resistant types.
* = could be replaced
Known problems:
Rock type: one time in battle this whole team was swept by stone edge. I need a good suggestion for a defender against rock.
Physical hits: Most of this team’s defense is pretty low, so it cant take a physical hit. Im thinking of replacing Rotom with Skarmory and Togekiss with Gengar.
EDIT: replace lucario with infernape, aerodactyl with swampert, and dusknoir with rotom. tell me if thats a bad idea.
Swampert @ leftovers
Torrent
252 HP / 4 Atk / 252 Def
Relaxed nature
-Stealth Rock
-Earthquake
-Ice Beam
-Protect
This is my second choice for a lead. This is mainly to block that glaring electric weakness. Stealth rock is for spreading entry hazards, EQ is STAB, ice beam is for stopping dragon types, and protect is for scouting and stopping explosions.
Infernape @ life orb *
Blaze
252 Atk / 64 SpA / 192 Spe
Naive nature
-Close Combat
-U-turn
-Stone Edge
-Overheat
This is my second choice for a physical sweeper, though its actually the mixape moveset. Overheat is for STAB, and the adverse effects can be negated by u-turn. The same can be said for close combat. stone edge is for stopping things like gyarados.

Starmie @ life orb *
Natural Cure
136 HP / 156 Def / 216 Spe
Timid nature
-hydro pump
-Tbolt
-ice beam
-recover
This is my filler pokemon that I use to cover type weaknesses. Hydro pump is for STAB, which imo is better than surf because it does just a little bit more damage. Tbolt is for gyarados, and Ice beam is for dragon types. Recover is for, well recovering.

Blissey @ leftovers
Natural Cure
4 HP / 252 SpA / 252 Spe
Bold nature
-aromatherapy
-toxic
-flamethrower
-softboiled
This is my special wall. Aromatherapy is used to heal off those pesky statuses, toxic is for stalling while I wall any attacks, flamethrower is for whittling down the enemy's HP while I wall, and softboiled is to heal off any little damage I took, which when put together with leftovers, is a lot of HP gained back.

Togekiss @ leftovers
Serene Grace
252 HP / 152 SpA / 104 Spe
Modest nature
-air slash
-nasty plot
-aura sphere
-roost
This is what I chose as my special sweeper. Air slash is for STAB, which combined with serene grace, is pretty awesome, because the flinch rate is 60%. Nasty plot is to gain some extra power at the beginning, Aura sphere is coverage against the rock types, and Roost is to gain back any health I lost.
Rotom-C @ Leftovers
Levitate
248 HP / 168 Def / 92 Speed
Bold nature
-Thunderbolt
-Substitute
-Shadow Ball
-Will-O-Wisp
This is the second spin blocker that I chose. Shadow ball and Thunderbolt is for Stab, Will-o-wisp is for spreading burn, and substitute takes advantage of the opponent switching. I use cut because the opponent will probably switch into something grass resistant, and my team can meat most grass-resistant types.
* = could be replaced
Known problems:
Rock type: one time in battle this whole team was swept by stone edge. I need a good suggestion for a defender against rock.
Physical hits: Most of this team’s defense is pretty low, so it cant take a physical hit. Im thinking of replacing Rotom with Skarmory and Togekiss with Gengar.