This is the Jumper: it is a 6-legged robot from China’s KingKong that has 22 degrees of freedom. It is powered by an 8 core processor with 6 TOPS NPU, 4GB RAM and 64GB of storage space. It has 22 tactile servos for its joints. It uses a 6-axis IMU for sensing.
This little crab robot went viral. Now its training toolkit is open source. 🦀
It’s Jumper, a six-legged robot from China’s KingKong with 22 degrees of freedom. It walks, dances and grabs objects, and KingKong lists a jump height of at least 40 cm, roughly 16 inches.
The release includes the robot model, MuJoCo simulation, reinforcement-learning training and deployment tools. Parts of the public deployment code still need validation on the real robot.
I like that you don’t need to own one to get started. You can train a walking gait, tweak the rewards and replay the result to see how Jumper’s movement changes.
Someone’s already used the model to build a browser game where you can assemble the robot and get a whole crowd of crabs dancing.
— RoboHub🤖 (@XRoboHub) October 12, 2026
The robot can dance, jump and grasp items. An open source training toolkit is available for it that includes the model, MuJoCo simulation, reinforcement-learning training and deployment tools.