Robot Types
Humanoid anatomy and control ↗
Follow the sensors, actuators and control loops behind walking, grasping, perception and task execution, with links to documented robot hardware.
Sources checked 8 October 2026FORM AND FUNCTION
Robot bodies and movement
Compare four physical arrangements before reading an individual machine. A body type describes its support and movement, while the control system determines the task it can execute.
Four arrangements
| Body | Movement and task constraint | Documented example |
|---|---|---|
| Biped | Two legs support the body while arms reach or carry. Foot placement and traction constrain motion. | Base G1 has six joints per leg. Unitree G1 profile ↗ |
| Wheeled mobile manipulator | A wheeled base moves the arms between work positions. Floor access and arm reach are separate constraints. | Galbot G1 combines a four-wheel omnidirectional base with two seven-joint arms. Galbot G1 specifications ↗ |
| Quadruped | Four legs carry sensors across a route. Manipulation requires a suitable arm or tool. | Boston Dynamics sells Spot for inspection and offers an integrated arm. Spot and arm options ↗ |
| Fixed robot arm | The mounted base defines the workspace. Joint motion positions the attached tool. | Universal Robots lists six rotating joints and 850 mm reach for UR5e. UR5e technical manual ↗ |
The examples are manufacturer descriptions checked on 8 October 2026. They establish the stated hardware arrangement, not a common task benchmark. This is a starting comparison, not a complete classification of robots.