According to an article in a dubious magazine, this Pokémon has some connection to a phenomenon that occurs in a certain region.
Roaring Moon is a Dragon/Dark-type Pokémon. It takes double damage from Ice, Fighting, Bug and Dragon, quadruple damage from Fairy, resists six types, and is immune to Psychic. Its base stats add up to 590: the highest is Attack (139) and the lowest is Special Attack (55).
It does not evolve, and no other Pokémon evolves into it. Its ability is Protosynthesis. It cannot breed: it is in the Undiscovered egg group. In Scarlet and Violet it learns 17 moves by level-up and 58 by TM.
BASE STATS
EVs on defeat:
Attack +3
ABILITIES
Boosts the Pokémon's most proficient stat in harsh sunlight or if the Pokémon is holding Booster Energy.
BREEDING
MOVES
WEAKNESSES & RESISTANCES
EVOLUTION LINE
This Pokemon does not evolve