Slowking @ Slowkinite  
Ability: Regenerator  
Level: 50  
EVs: 252 HP / 180 Def / 76 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Muddy Water  
- Substitute  
- Ally Switch  
- Protect

Unown
Move options:
- offensive: Scald, Psychic, Expanding Force, Seismic Toss
- supportive: Heal Pulse, Growl, Reflect, Light Screen, Slack Off, Safeguard, Disable

Unown
Defensive calcs:
- 252+ Atk Mega Rillaboom Grassy Glide vs. 252 HP / 180 Def Mega Slowking in Grassy Terrain: 170-204 (84.1 - 100.9%) -- 6.3% chance to OHKO
- 252+ SpA Moltres-Galar Fiery Wrath vs. 252 HP / 76+ SpD Mega Slowking: 84-98 (41.5 - 48.5%) -- guaranteed 3HKO

Unown
Useful partners:
- Trick Room abusers: Crabominable, Glastrier, Snorlax, Lurantis, Stakataka, Torkoal, Alolan Marowak
- redirection: Indeedee-F, Amoonguss

Slowking @ Slowkinite  
Ability: Regenerator  
Level: 50  
EVs: 244 HP / 12 Def / 252 SpA  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Scald  
- Nasty Plot  
- Expanding Force  
- Protect

Unown
Move options:
- offensive: Muddy Water

Unown
Offensive calcs:
- +2 252+ SpA Mega Slowking Scald vs. 236 HP / 236+ SpD Incineroar: 210-248 (105 - 124%) -- guaranteed OHKO

Unown
Useful partners:
- Trick Room abusers: Crabominable, Glastrier, Snorlax, Lurantis, Stakataka, Torkoal, Alolan Marowak
- Psychic Terrain setter: Indeedee-F