The moss-covered Snorlax in Pokémon Pokopia is nicknamed Mosslax. Ditto encounters this unusual Snorlax in Bleak Beach, an area whose sky remains heavily clouded and gloomy even during daytime.
The nickname reflects the Pokémon’s long sleep. Snorlax has been dormant for so long that moss has grown over its body, turning a familiar Pokémon into a landmark of Bleak Beach’s neglected environment. Restoring light in the area becomes important to waking it.
Mosslax should not be confused with a new species or an evolution. It is still a Snorlax with a story-specific nickname and appearance. The game uses several playful names for important Pokémon, including Peakychu for a pale Pikachu and Chef Dente for a cooking Greedent, but Mosslax is the name tied to the moss-covered sleeper.