Sabrina

Sabrina
She is a gym leader as you propally already know and she has a mean psychic bite.The braclets on her arm controls her power. The reason why she is in team rocket is because a man in the story while ash and his friends were battling her there was a man and he made a deal after they left he said:"If you join team rocket we will bring you to your inter self".And that has been her goal since childhood. The reason why they wanted her for her power.When she got there the put her asleep and brainwashed her to do what ever they said.So she became a new life and was a bright person not a dark person anymore.But she is still in order of the Team Rocket with her psychic powers.