Hello, i'm Andrea and i'm from Italy, so sorry if i do some mistakes in speaking :D It's my first RMT, I hope you can help me with it!
Gyarados @ Leftovers
Intimidate
Adamant Nature
216 HP / 16 Atk / 176 Def / 100 Spe
Dragon Dance
Waterfall
Earthquake
Taunt
Standard Bulky Gyarados. I've tried some different lead, but i like a lot this. Taunt if is needed, DD if the enemy is switching, run away from electric moves and switch in Electivire or Gliscor. Intimidate can help against attack-based leads and force them to switch. Great Lead.
Electivire @ Expert Belt/Focus Sash
Motor Drive
Adamant Nature
6 Hp / 252 Atk / 252 Spe
ThunderPunch
Ice Punch
Cross Chop
Earthquake
Super-Effective Electivire. Not much to say. With good prediction i can get a free speed-boost on incoming electric attacks against Gyarados, and hit hard in return. I was thinking about changing ThunderPunch with Thunderbolt : tell me what you think about it.
Expert Belt is my main item, but focus sash can allow me to revenge-kill faster enemies. Tell me what do you think about it.
Gliscor @ Lum Berry
Sand Veil
Jolly Nature
180 Hp / 200 Atk / 188 Spe
Sword Dance
Earthquake
Ice Fang
Roost
Sword Dance Gliscor. Switch it in on electric moves that are going to hit Gyarados, or Earth moves that are going to hit Electivire, then SD and Sweep. Roost if is needed or on a free turn. Lum Berry is here to avoid Sleep or Burn, that can completely mess up my sweeping attemp.
Hippowdon @ Leftovers
Sand Stream
Impish Nature
252 Hp / 16 Atk / 152 Def / 88 SpD
Earthquake
Yawn
Stealth Rock
Slack Off
Physical Wall, with Sandstorm. It can activate Gliscor's Sand Veil and hit only 2 of my pokes, so i guess it's acceptable. I chose Yawn instead of Ice Fang because Ice Fang does little damages if it's not super effective, and Yawn can be annoying and can stop foe's sweepers.
Metagross @ Leftovers
Clear Body
Adamant Nature
152 Hp / 252 Atk / 104 Spe
Meteor Mash
Earthquake
Agility
ThunderPunch
Switch in a resisted attack, Agility on the foe's switch, then Sweep. ThunderPunch is for Skarmory and Water pokes. Being immune to Sandstorm, Toxic Spikes and Toxic, and taking little damages from Stealth Rock makes him a lot of switch-in chances. It works well especially in late-game situations. One of my favourite pokemon since it was created.
Kingdra @ Leftovers
Swift Swim
Modest Nature
120 Hp / 252 SpA / 136 Spe
Surf
Rain Dance
Ice Beam
Hidden Power Electric
Late Game Special Sweeper. Rain Dance has a double role in this team : to eliminate Hippowdon's Sandstorm when it becomes useless or dangerous for me, and to double Kingdra's Speed. Surf + Rain Dance does decent damages to everything that doesn't resist it, and Ice Beam and HP Electric can manage what resist Surf.
Thanks for reading! All constructive comment are well-accepted!
Andy

Gyarados @ Leftovers
Intimidate
Adamant Nature
216 HP / 16 Atk / 176 Def / 100 Spe
Dragon Dance
Waterfall
Earthquake
Taunt
Standard Bulky Gyarados. I've tried some different lead, but i like a lot this. Taunt if is needed, DD if the enemy is switching, run away from electric moves and switch in Electivire or Gliscor. Intimidate can help against attack-based leads and force them to switch. Great Lead.

Electivire @ Expert Belt/Focus Sash
Motor Drive
Adamant Nature
6 Hp / 252 Atk / 252 Spe
ThunderPunch
Ice Punch
Cross Chop
Earthquake
Super-Effective Electivire. Not much to say. With good prediction i can get a free speed-boost on incoming electric attacks against Gyarados, and hit hard in return. I was thinking about changing ThunderPunch with Thunderbolt : tell me what you think about it.
Expert Belt is my main item, but focus sash can allow me to revenge-kill faster enemies. Tell me what do you think about it.

Gliscor @ Lum Berry
Sand Veil
Jolly Nature
180 Hp / 200 Atk / 188 Spe
Sword Dance
Earthquake
Ice Fang
Roost
Sword Dance Gliscor. Switch it in on electric moves that are going to hit Gyarados, or Earth moves that are going to hit Electivire, then SD and Sweep. Roost if is needed or on a free turn. Lum Berry is here to avoid Sleep or Burn, that can completely mess up my sweeping attemp.

Hippowdon @ Leftovers
Sand Stream
Impish Nature
252 Hp / 16 Atk / 152 Def / 88 SpD
Earthquake
Yawn
Stealth Rock
Slack Off
Physical Wall, with Sandstorm. It can activate Gliscor's Sand Veil and hit only 2 of my pokes, so i guess it's acceptable. I chose Yawn instead of Ice Fang because Ice Fang does little damages if it's not super effective, and Yawn can be annoying and can stop foe's sweepers.

Metagross @ Leftovers
Clear Body
Adamant Nature
152 Hp / 252 Atk / 104 Spe
Meteor Mash
Earthquake
Agility
ThunderPunch
Switch in a resisted attack, Agility on the foe's switch, then Sweep. ThunderPunch is for Skarmory and Water pokes. Being immune to Sandstorm, Toxic Spikes and Toxic, and taking little damages from Stealth Rock makes him a lot of switch-in chances. It works well especially in late-game situations. One of my favourite pokemon since it was created.

Kingdra @ Leftovers
Swift Swim
Modest Nature
120 Hp / 252 SpA / 136 Spe
Surf
Rain Dance
Ice Beam
Hidden Power Electric
Late Game Special Sweeper. Rain Dance has a double role in this team : to eliminate Hippowdon's Sandstorm when it becomes useless or dangerous for me, and to double Kingdra's Speed. Surf + Rain Dance does decent damages to everything that doesn't resist it, and Ice Beam and HP Electric can manage what resist Surf.
Thanks for reading! All constructive comment are well-accepted!
Andy