Hippie (Hippowdon) (M) @ Leftovers
Trait: Sand Stream
EVs: 252 HP / 168 Atk / 88 SDef
Careful Nature (+SDef, -SAtk)
- Earthquake
- Whirlwind
- Stealth Rock
- Slack Off
Why would you use Whirlwind if there are no hazards?
Derpfisk (Stunfisk) (M) @ Leftovers
Trait: Static
EVs: 252 HP / 108 SAtk / 148 SDef
Modest Nature (+SAtk, -Atk)
- Discharge
- Sludge Bomb
- Earth Power
- Substitute
Nidoking (M) @ Expert Belt
Trait: Sheer Force
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature (+Spd, -Atk)
- Earth Power
- Flamethrower
- Ice Beam
- Thunderbolt
Expert Belt is better here, cause due to your Nidoking's move set, there aren't a lot of pokes that you don't hit SE. In fact, only Swampert, Spiritomb and a few others are hit neutrally.
I had to seperate it in two parts.