The L. A. Derby Dolls (LADD) is Los Angeles' original women's quad-skate banked track roller derby league. It was founded in October 2003 by Rebecca Ninburg (a.k.a. Demolicious) and Wendy Templeton (a.k.a. Thora Zeen). The league is composed of more than 120 women divided into five teams who skate on a banked track.