Snorlax @ Figy Berry  
Ability: Gluttony  
EVs: 252 HP / 252 Atk / 4 Def  
Adamant Nature  
- Belly Drum  
- Extreme Speed  
- Crunch  
- Earthquake
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Optional Move(s):
- Fire Punch  
Optional EV(s):
- 4 HP / 252 Atk / 252 Def Adamant Nature
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Overview:
Snorlax's niche as a sweeper is its naturally access to Belly Drum, which maximizes its Attack in just one turn of set-up and Extreme Speed as a strong priority.Its high HP stat and good special bulk alongside Gluttony grants it a good set-up opportunities. Despite Extreme Speed, its low Speed hinders it because it will almost always move last and is suspectible to being crippled by status move such as Will-O-Wisp, Toxic and Taunt prior to set-up. Its middling Defense stat leaves it vulnerable to physical attackers such as Marshadow, Primal Groudon and Necrozma-Dusk-Mane.