What is the boss 2-9 in western cave on Pokemon MD red rescues?

In Pokémon Mystery Dungeon: Red Rescue Team, Boss 2-9 in the Western Cave is a powerful enemy known as Mewtwo. Mewtwo is a Psychic-type Pokémon with high stats, making it a formidable opponent. It utilizes a range of strong Psychic-type moves and can be challenging to defeat without a well-prepared team. Players should ensure they have effective strategies and items to increase their chances of success in this battle.