Mosslax is based on the Pokémon species Snorlax in Pokémon Pokopia.
Mosslax is one of the game’s special Pokémon characters. The character is described as a Snorlax that slept for so long that moss and other plants grew over its body, turning a familiar Pokémon trait—deep sleep—into a visual feature of the restored world.
This detail is part of Pokémon Pokopia’s broader use of altered or named Pokémon personalities. Other special characters include Peakychu, a Pikachu with lost electrical abilities, Smearguru, a particularly talented Smeargle, and DJ Rotom, whose form involves a stereo system.
Mosslax is not a separate species in the standard Pokémon taxonomy. The name is a character name built from its moss-covered appearance and its base species, Snorlax.