Walrein @ Walreinite  
Ability: Thick Fat  
Level: 50  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Freeze-Dry  
- Protect  
- Hydro Pump  
- Flip Turn

Unown
Options:
- offensive: Ice Beam, Frost Breath, Surf
- supportive: Icy Wind, Slack Off
- Nature: Modest

Unown
Offensive calcs:
- 252 SpA Mega Walrein Freeze-Dry vs. 252 HP / 252+ SpD Gastrodon: 216-256 (99 - 117.4%) -- 87.5% chance to OHKO

Unown
Useful partners:
- Rain abusers: Ludicolo, Kingdra, Dracovish, Seismitoad, Urshifu-Rapid Strike, 
- speed control: Tornadus, Zapdos