Jayna and Zan (known professionally as the Wonder Twins) are a twin sister and brother superhero duo.
Working with the Titans
After Beast Boy was fired from the Teen Titans, the Titans held auditions in order to find another superhero with animal powers. The Wonder Twins were the last to audition and introduced themselves to the Titans. However, only Jayna succeeded in impressing the Titans. After a brief huddle, the Titans informed Jayna that she got the position. However, when she learned that Zan hadn't been hired, she informed the Titans that they needed each other to activate their powers. As such, Robin decided to hire Zan as their receptionist.