Meet the NimbRo-OP2X: a 3D printed open source humanoid robot capable of playing soccer. The robot has a modular structure and an ROS based software. The robot weighs 9kg and stands 135cm tall. It has 34 actuators and lasts up to 40 minutes on battery.
The above video shows this robot in action. It was developed by the Autonomous Intelligent Systems group of University of Bonn, Germany.