Dr. Christian Ott received the Dipl.-Ing. degree in mechatronics from the Johannes Kepler University (JKU), Linz, Austria, in 2001, and the Dr.-Ing.degree in control engineering from Saarland University, Saarbruecken, Germany, in 2005. From 2001 to 2007, he was with the German Aerospace Center(DLR), Institute of Robotics and Mechatronics, Wessling, Germany. From May 2007 to June 2009, he was a Project Assistant Professor in the Department of Mechano-Informatics, University of Tokyo, Tokyo, Japan. Since then, he has been working at DLR as team leader of the Helmholtz Young Investigators Group for ”Dynamic Control of Legged Humanoid Robots”. In January 2014, he became head of the Department of Analysis and Control of Advanced Robotic Systems at DLR. His research interests include nonlinear robot control, flexible joint robots, impedance control, and control of humanoid robots.