Without Further Ado:
Lead

Butterfree@Focus Sash
Timid
Compound Eyes
4Def/252Sp Atk/252Speed
Sleep Powder
Stun Spore/HP Water
Bug Buzz/Energy Ball
Quiver dance
I have to be completely honest here, when i battled Royal Infinity's NU team and he came out with a Butterfree I thought it was Pure Bad Assery, and wanted to make one of my own, so I freely admit that i borrowed his idea. This one is a double powder lead, the basic idea is to Sleep Powder the first turn and the majority of the time the opponent will switch right into Stun spore, effectively crippling two of the opponents 6 pokemon, i can use protect to scout the opponents next move, whether it's a switch or an attack, if it's a switch and there isn't a rule in effect to prohibit me from multiple paralysis(sese??) i can use stun spore on the the next pokemon, if i can outspeed it, i've used this a couple of times and i can see why Roy likes using it.
EDIT:
revised moveset, EV Spread and Nature with thanks to bunny's suggestions (read bunny's comment as to the point of the moveset)

Butterfree@Focus Sash
Timid
Compound Eyes
4Def/252Sp Atk/252Speed
Sleep Powder
Stun Spore/HP Water
Bug Buzz/Energy Ball
Quiver dance
I have to be completely honest here, when i battled Royal Infinity's NU team and he came out with a Butterfree I thought it was Pure Bad Assery, and wanted to make one of my own, so I freely admit that i borrowed his idea. This one is a double powder lead, the basic idea is to Sleep Powder the first turn and the majority of the time the opponent will switch right into Stun spore, effectively crippling two of the opponents 6 pokemon, i can use protect to scout the opponents next move, whether it's a switch or an attack, if it's a switch and there isn't a rule in effect to prohibit me from multiple paralysis(sese??) i can use stun spore on the the next pokemon, if i can outspeed it, i've used this a couple of times and i can see why Roy likes using it.
EDIT:
revised moveset, EV Spread and Nature with thanks to bunny's suggestions (read bunny's comment as to the point of the moveset)
Shell Smash Sweeper/Stealth Rocks

Crustle@White Herb
Jolly
6HP/252Atk/252Speed
Shell Smash
Stone Edge
Earthquake
Stealth Rock
We're starting to go into unknown territory for me, i'm coming up with most of these movesets and EV spreads on the fly, and I'm not so good at the Maths xp there were a few different sets that i was thinking of for this, one being an iron defense wall, and be used primarily to set up stealth rock, or a shell smash sweeper, which i don't really need
EV Spread:
The Ev Spread and Nature is used to maximize survivability as much as possible a Careful Nature is also a possibility. Max HP is a given to give it overall bulk, 152 Ev's go into Sp Def, since both attack and Defense will (hopefully) get boosted by Curse, and the rest split into Def & Attack for a little more bite
Moveset:
Curse is used to bulk up defense and attack while lowering speed
X-scissor and Rock Slide are the obligatory stab moves, while rock slide will hit fire types for SE, Stealth Rocks are to help with the sweep
(Optional Moveset)
Careful 252HP/6Atk/252Sp Def
Iron Defense/Spikes/RockSlide/Stealth Rocks
I'd need to breed a forretress in Gen IV, to pass the egg moves down, but this set would be used to set up entry hazards as much as possible with maximum bulk

Crustle@White Herb
Jolly
6HP/252Atk/252Speed
Shell Smash
Stone Edge
Earthquake
Stealth Rock
We're starting to go into unknown territory for me, i'm coming up with most of these movesets and EV spreads on the fly, and I'm not so good at the Maths xp there were a few different sets that i was thinking of for this, one being an iron defense wall, and be used primarily to set up stealth rock, or a shell smash sweeper, which i don't really need
EV Spread:
The Ev Spread and Nature is used to maximize survivability as much as possible a Careful Nature is also a possibility. Max HP is a given to give it overall bulk, 152 Ev's go into Sp Def, since both attack and Defense will (hopefully) get boosted by Curse, and the rest split into Def & Attack for a little more bite
Moveset:
Curse is used to bulk up defense and attack while lowering speed
X-scissor and Rock Slide are the obligatory stab moves, while rock slide will hit fire types for SE, Stealth Rocks are to help with the sweep
(Optional Moveset)
Careful 252HP/6Atk/252Sp Def
Iron Defense/Spikes/RockSlide/Stealth Rocks
I'd need to breed a forretress in Gen IV, to pass the egg moves down, but this set would be used to set up entry hazards as much as possible with maximum bulk
EDIT:
After running this team a few times, with some not so good results, this is one of the edits i'm going to try a shell smash set, again bunny gave a helpful suggestion & reminded me of white herb, which i totally forgot about xp stone edge is there for more power though rockslide can work also, i also swapped out x-scissor for earthquake, since i have an overabundance of bug attacks, having another EQ'er would probably be more useful
After running this team a few times, with some not so good results, this is one of the edits i'm going to try a shell smash set, again bunny gave a helpful suggestion & reminded me of white herb, which i totally forgot about xp stone edge is there for more power though rockslide can work also, i also swapped out x-scissor for earthquake, since i have an overabundance of bug attacks, having another EQ'er would probably be more useful
Toxic Spiker/Secondary Physical Sweeper

Scolipede@life Orb/Focus Sash
Jolly
252Atk/4Def/252Speed
Swords Dance
Megahorn
Earthquake
Toxic Spikes
EV Spread And Nature:
Standard Physical Sweeper set, with an adamant nature to get as much out of it's Base 90 attack as possible though jolly is a possibility to ensure at least one layer of toxic spikes or one swords dance
Moveset:
Swords Dance is to boost it's Mediocre Base 90 Attack, Megahorn gets stab, and Earthquake has good Coverage, Toxic Spikes to further help the sweep, Scolipedes movepool is rather shallow, and if anyone can come up with better movesets, i'm all ears blaugh
EDIT:
Changed the nature, and possibly the hold item, setting up at least one layer of toxic spikes is important for the special sweeper that's listed next
otherwise everything is the same
Veno Shock Sweeper

Accelgor@Life Orb
Modest
4Def/252Sp Atk/252 Spe
Veno Shock
Focus Blast
Energy Ball/HP Electric, Rock
Bug Buzz
Ev Spread & Nature:
Ev's are set to maximize Special Attack and Speed while the Nature is to give a Special Attack boost Accelgor is the second fastest OU pokemon and will outspeed anything not holding a scarf and some that are
Moveset:
Veno Shock and Focus Blast are the core of this set, Veno Shock gets a base 130 with a pokemon thats poisoned, with T-Spikes hopefully still on the field, focus blast is there to hit the Steels that are immune to poison, energy ball is there for rock types who attempt to switch in, HP electric covers water and flying, though rock gets a thought with it's coverage of flying and fire

Accelgor@Life Orb
Modest
4Def/252Sp Atk/252 Spe
Veno Shock
Focus Blast
Energy Ball/HP Electric, Rock
Bug Buzz
Ev Spread & Nature:
Ev's are set to maximize Special Attack and Speed while the Nature is to give a Special Attack boost Accelgor is the second fastest OU pokemon and will outspeed anything not holding a scarf and some that are
Moveset:
Veno Shock and Focus Blast are the core of this set, Veno Shock gets a base 130 with a pokemon thats poisoned, with T-Spikes hopefully still on the field, focus blast is there to hit the Steels that are immune to poison, energy ball is there for rock types who attempt to switch in, HP electric covers water and flying, though rock gets a thought with it's coverage of flying and fire
EDIT:
Swapped Out CS Galvantula for this set, and i'm not exactly sure how well it'll do in it's place, but i guess i'll see
Quiver Dance Special Sweeper

Volcarona@Life Orb
Modest
Flame Body
4Def/252Sp Atk/252Speed
Quiver Dance
Fire Blast
Bug Buzz
HP Grass/Ground
EV Spread & Nature:
With Quiver Dance, Ev's could be spread out a little more, giving it a little more bulk, I'm not sure about it so i just went with the standard Sp Sweeper spread, Modest just because i bred a good one with that nature xd otherwise timid or calm would work also
Moveset:
Quiver Dance is the whole basis of this set, and with all the fire that i'll probably be seeing have a good chance to switch and set up, Fire Blast and Bug Buzz are the obligatory stab, and have great coverage, and with Quiver Dance can still hit hard resisted HP Grass or Ground is for coverage, Grass being the preferable choice since it hits, ground, rock and water, though ground gets notable mention to cover rock and fire, which i'll see a lot of most likely

Volcarona@Life Orb
Modest
Flame Body
4Def/252Sp Atk/252Speed
Quiver Dance
Fire Blast
Bug Buzz
HP Grass/Ground
EV Spread & Nature:
With Quiver Dance, Ev's could be spread out a little more, giving it a little more bulk, I'm not sure about it so i just went with the standard Sp Sweeper spread, Modest just because i bred a good one with that nature xd otherwise timid or calm would work also
Moveset:
Quiver Dance is the whole basis of this set, and with all the fire that i'll probably be seeing have a good chance to switch and set up, Fire Blast and Bug Buzz are the obligatory stab, and have great coverage, and with Quiver Dance can still hit hard resisted HP Grass or Ground is for coverage, Grass being the preferable choice since it hits, ground, rock and water, though ground gets notable mention to cover rock and fire, which i'll see a lot of most likely
Physical Tank

Escavalier@Life Orb/Leftovers
Adamant
252HP/6Atk/126Def/126Sp Def
Swords Dance
Megahorn/X-Scissor
Pursuit/Faint Attack
Reversal/Poison Jab/Aerial Ace
Ev Spread @ Nature:
Nature boosts attack so thats a given, Ev spread allows it to survive physical and special threats, giving it balance bulk, though focusing on one stat is also possible
Moveset:Wow, it's movepool is as bad as it's base speed, so not many options here, megahorn or x-scissor, basic power over accuracy dilemma
pursuit, is the preference since i'm hoping to force a switch or two, though faint attack and knock off are other options available, since the base power of all three arent great, at least with knock off i can get rid of hold items barring sticky hold, the last move gah, i just put what i thought would be the best options on there, the reason i picked Reversal over Counter is that with the LO Recoil, Swords Dance, and horrible speed, by the 3rd or fourth turn (if it survives that long emo ) Reversal will have more consistent damage IMO, Poison Jab is there for lack of a better option, Aerial Ace, is noted only because fighting types completely wall it other wise...
EDIT:
Changed EV spread....that's all
there we go, an all bug type team, I know the weaknesses, and i hope i've covered them well
Any Help would Be Much Appreciated
Revisions Noted
