Snorlax

Snorlax is a Normal-type Pokémon introduced in the Generation I games, Pocket Monsters Red and Green Versions (Pokémon Red and Blue Versions in regions outside Japan). As of Generation IV, it evolves from Munchlax when leveled up with high Friendship. Since Pokémon Sword and Shield, Snorlax has a Gigantamax form, Gigantamax Snorlax. Snorlax is described as being lazy, as it spends most of its time sleeping and eating.

Pokémon Red and Blue Versions / Pokémon Yellow Version: Special Pikachu Edition
In Pokémon Red and Blue Versions and Pokémon Yellow Version: Special Pikachu Edition, there is a Snorlax blocking the path to Route 12 and Route 16 respectively. It is asleep and can only be awoken by playing the Poké Flute. In doing so, a Pokémon battle with the Snorlax begins. Both Snorlaxes are at a level 30 (though in Pokémon FireRed and LeafGreen Versions, the one at Route 16 was made level 34 instead). Once the Snorlax is captured or has been defeated, it is no longer blocking the path. The player character must do this to at least one Snorlax in order to progress to Fuchsia City.

Pokémon Gold and Silver Versions / Pokémon Crystal Version
In Pokémon Gold and Silver Versions, just outside of Vermillion City, there is a sleeping Snorlax who is obstructing the entrance to Diglett's Cave. Like in the Generation I games, the player character can must use the Poké Flute to wake it up. However, they can alternatively use the Pokégear by setting it to the Poké Flute station. Once the Snorlax wakes up, the player character is forced into a battle against it. The Snorlax is at level 50, which is slightly higher than the two sleeping Snorlaxes in the Generation I games.

Super Smash Bros. series
Snorlax appears as a Poké Ball Pokémon in every installment of the Super Smash Bros. series to date. When summoned, it leaps up into the air and attacks using Body Slam, falling down onto the battlefield at a larger size and smashing any opponents in its path, sending them flying. Snorlax can also attack opponents when flying up after being summoned.

In Super Smash Bros. Melee Snorlax is one of the balloons featured in the Poké Floats stage.

In Super Smash Bros. for Wii U, a Snorlax trophy can be unlocked by clearing the Fitness Junkie Event Match on Normal difficulty or higher.

Pokémon Channel
In Pokémon Channel, there is an exclusive Pokémon mini minigame starring Snorlax titled Snorlax's Lunch Time. The objective is to feed Snorlax as much as possible, although if it accidentally tries to eat a Pichu, the minigame ends. The Game Over screen shows the Pichu angry at Snorlax.