Plot summary
The Titans meet Terra, a girl with the elemental ability to manipulate the earth around her. Though a seemingly great addition to the team, she confides in Beast Boy that she has trouble controlling her powers, and Robin feels off about her. Terra is confronted by Slade, who tells her he will be a better mentor than the Titans. When the Titans mention that they have noticed her struggle with her powers, Terra leaves them, assuming Beast Boy exposed her. Villain(s): Slade, Giant Scorpion
Credits
Adapted from Wikipedia contributors, Teen Titans season 2. HTML formatting and reference markers removed.