Slowbro with 5IV (no attack) with leftovers, EV's 252/232/24 (HP,DEF,SPD in that order) with its HA. Moveset: Scald,Calm Mind, Slack Off, And Thunder Wave.
Politoed with 5IV (no attack) with damp rock, EV's 252/252/4 (HP,SPD,SPATK) with its HA Moveset: Toxic,Scald,Hypnosis, Ice Beam.
Ludicolo With 5IV (no attack) with life orb, EV's 252/252/4 (SPATK,SPDEF, and SPD.) with swift swim. Moveset: Rain Dance, Hydro Pump, Giga Drain, and ice beam.
Ferrothorn with 5IV (no speed) with leftovers. EV's 252/252/4 (HP, Def, Atk) with ability iron barbs. Moveset: Stealth
rock, Gyro Ball, Power Whip and leech seed.
Swampert With 6IV with swamperite. EV's 252/104/152 (ATK, HP, SPD.) With swift swim. Moveset: Earthquake, Ice Punch, waterfall, low kick.
Vaporeon with 5IV (no attack) with leftovers. EV's 252/188/68 (DEF, HP, SPD.) with hydration. Moveset: Wish, heal hell, ice beam, and scald.Thats all! Thanks
(also, SPD means speed not special defence)