Team Building Help

Just looking for suggestions on what other members I should include on my team. Right now I have 3 Pokémon on the team:

Pelipper @ Damp Rock
Ability: Drizzle
EVs: 248 HP / 252 Def / 8 SpD
Bold Nature
- Scald
- Roost
- U-turn
- Hurricane

Barraskewda @ Leftovers
Ability: Swift Swim
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Liquidation
- Close Combat
- Drill Run
- Poison Jab


Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Stealth Rocks
- Leech Seed
- Power Whip
- Gyro Ball

I've been using the team and it's done okay but it very weak to any quick electric types if ferrothorn goes down. Just looking for more coverage and to possibly use this team for competitive play. Let me know what Pokemon you think I should add to the team along with its set to make it better thanks !

Any feelings towards Quagsire with Unaware? It would provide good coverage with Electric which I feel is necessary for a Rain Dance/Water team. While also helping you against anyone attempting to do some Stat boosts sweeps.

What metagame is this for? OU?
Kingdra is a fantastic rain sweeper.