I’ve been Playing Mystery Dungeon a Long time ago. The Roles are Swapped. NPC Shopkeepers are Pokémon except Kecleon who is a Player Rescuer. The [Your Pokémon here] shop in the Dungeon while Kecleon is a Thief not a Rescuer. The Shopkeeper Pokémon will become Hostile. The Other Pokémon at the Highest Stats will Spawn. For Example: Kecleon steals Invisify Orb at the Gardevoir Shop they will turn Angry for stealing. PMD belongs to Spike Chunsoft.