Hunter J

Hunter J, frequently referred to as either Pokémon Hunter J, J, or Jay in certain dubs, is the central antagonist in Pokémon Diamond and Pearl. She is a Pokémon hunter who, with the help from her henchmen, captures Pokémon, steals Trainers' Pokémon and sells the Pokémon requested by her clients for a profit on the black market, by any means necessary, including abandoning her henchmen, or and doesn’t shy away from killing anyone who gets in her way.