Immunity
The immune system of the Pokémon prevents it from getting poisoned.
Thick Fat
The Pokémon is protected by a layer of thick fat, which halves the damage taken from Fire- and Ice-type moves.
Gigantamax energy has affected stray seeds and even pebbles that got stuck to Snorlax, making them grow to a huge size.
Terrifyingly strong, this Pokémon is the size of a mountain—and moves about as much as one as well.