I suspect this Pokémon to be the true identity of a dragon written of in ancient texts, which claimed that it razed an entire village with white-hot beams from its maw.
When the Pokémon enters a battle, it intimidates opposing Pokémon and makes them cower, lowering their Attack stats.
Hidden Ability
When the Pokémon knocks out a target, it shows moxie, which boosts its Attack stat.
