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Jumper is a 22-DoF crab robot. View hardware →
This repo is Jumper’s AI toolkit for appearance, motion, and scene creation. Open this repo in an AI coding assistant and try the prompts below.
🦀 Get a free Jumper! Find out how →
Design a warm sand ranger appearance for Jumper with coordinated body and limb colors, then export a
.skin.
 |
 |
 |
| Warm sand ranger | Silver armor | Raphael Turtle |
Train a stable tripod gait for Jumper, replay and evaluate the result, then package it as an
.app.
 |
 |
 |
| Walk | Posture | Gesture |
  |
  |
  |
| Dance | Jump | Grasp |
Create a park pump-track scene for Jumper with rolling terrain, trees and benches, then export a
.map.
 |
 |
 |
| Park pump track | Bedroom | Soccer |
| Resource | Purpose |
|---|---|
| jumper-design | Appearance and scene creation; your assistant reads its instructions and uses its tools as needed. |
| Training tutorial | Motion training, replay and policy export in this repository. |
| Colab training | GPU training in a notebook, checkpoint backup, resume, ONNX export and MP4 simulation replay. |
| Motion bundles | Package trained motions and their controller as an .app; see the build guide for prerequisites. |
| Project guide | Setup, current capabilities and further documentation. |
Training builds on mjlab, rsl_rl, MuJoCo and MuJoCo Warp. Example appearance and scene images come from jumper-design; image sources and third-party notices record attribution.
Copyright 2026 KingKong Robotics.
Maintainer-owned project materials are licensed under Apache-2.0. See LICENSE, NOTICE, and licensing details. Third-party materials remain under their respective terms, and generated outputs do not automatically inherit this repository's license.