Can the wonderful people of PokeCharms help me out with my competitive team, any suggest are welcome. Here is my team. 
Lead
Metagross@Occa Berry
Adamant
252 HP / 236 Atk / 12 Def / 8 Spe
-Stealth Rock
-Meteor Mash
-Bullet Punch
-Explosion
This is my Lead he is meant to get out set up spikes and then kill/hurt as many pokemon as possible before he dies
Tank/Wall
Lugia@Leftovers
Bold
252 HP / 52 Def / 204 Spe
-Roost
-Reflect
-Whirlwind
-Ice Beam
This is my wall/tank as the names states he take hits
Articuno@?
?
Not Sure
-Ice Beam
-Roost
-U-Turn
-Signal Beam
i don't know what to do with articuno I dont wanna another tank but I'm trying to make him a offensive pokemon rather then the normal roll as a tank, Any ideas for him.
Flygon@Choice Band
Naughty
252 Atk / 80 SpA / 176 Spe
-Earthquake
-Outrage
-U-turn
-Draco Meteor
Physical Sweeper not much to say other then should I get rid of Draco meteor for something else or is he move set good.
Support
Miltank@Leftovers
Impish
252 HP / 224 Def / 32 Spe
-Heal Bell
-Body Slam
-Milk Drink
-Earthquake
She is my supporter she cures my team and her self while dishing out little damage, Any suggestions
Toxicroak@Life orb
Jolly
252 Atk / 6 Def / 252 Spe
-Swords Dance
-Cross Chop
-Stone Edge
-Sucker Punch
Another physical sweeper all though weaker then flygon still pretty powerful
Lead
Metagross@Occa Berry
Adamant
252 HP / 236 Atk / 12 Def / 8 Spe
-Stealth Rock
-Meteor Mash
-Bullet Punch
-Explosion
This is my Lead he is meant to get out set up spikes and then kill/hurt as many pokemon as possible before he dies
Tank/Wall
Lugia@Leftovers
Bold
252 HP / 52 Def / 204 Spe
-Roost
-Reflect
-Whirlwind
-Ice Beam
This is my wall/tank as the names states he take hits
Articuno@?
?
Not Sure
-Ice Beam
-Roost
-U-Turn
-Signal Beam
i don't know what to do with articuno I dont wanna another tank but I'm trying to make him a offensive pokemon rather then the normal roll as a tank, Any ideas for him.
Flygon@Choice Band
Naughty
252 Atk / 80 SpA / 176 Spe
-Earthquake
-Outrage
-U-turn
-Draco Meteor
Physical Sweeper not much to say other then should I get rid of Draco meteor for something else or is he move set good.
Support
Miltank@Leftovers
Impish
252 HP / 224 Def / 32 Spe
-Heal Bell
-Body Slam
-Milk Drink
-Earthquake
She is my supporter she cures my team and her self while dishing out little damage, Any suggestions
Toxicroak@Life orb
Jolly
252 Atk / 6 Def / 252 Spe
-Swords Dance
-Cross Chop
-Stone Edge
-Sucker Punch
Another physical sweeper all though weaker then flygon still pretty powerful