Humanoid Robot

A robot with a human-like body: a torso, two arms, and usually two legs.

A humanoid robot is a robot whose body structure imitates a human's: generally a head, torso, and two arms, with most walking on two legs, though some use a wheeled base instead of legs (a “wheeled humanoid”). The whole body typically has somewhere between twenty and fifty-plus degrees of freedom, meaning independently movable joints. The case for a human-shaped body is that human environments, such as stairs, door handles, and tools, are all designed for humans, so a humanoid can use them directly, and human video and teleoperation data also transfer to it more easily. The hard parts are bipedal balance, whole-body coordinated control, and cost. Early examples include Honda's ASIMO; recent ones include Boston Dynamics' Atlas, Tesla's Optimus, Figure 03, and Unitree's G1.

ExampleUnitree G1 and Tesla Optimus are both bipedal humanoids; Galbot G1 is a wheeled humanoid.

Related

Full-size Humanoid Robot · Wheeled Humanoid Robot · Bipedal Locomotion · Whole-Body Control · Tesla Optimus · Unitree G1

Sources

Optimus (robot) - Wikipedia
Unitree G1