Humanoid robots using water powered humanoid robot muscles sound like science fiction, but they are already moving in labs and test sites. A Polish company called Clone Robotics has built a torso and a full android whose artificial muscles run on water pressure instead of only rigid motors. Their goal is not to make toys or simple gadgets, but useful machines that move with the strength and dexterity of a human body.
In this article we explain how these hydraulic artificial muscles work, why Clone chose a biomimetic design that copies human anatomy, and where such robots might be used. We also look at what this could mean for jobs, safety, and everyday life, and suggest ways to follow progress without getting lost in hype.
How water powered humanoid robot muscles work
At the core of Clone’s design is a hydraulic system, which means a system moved by the pressure of a liquid instead of air or only electric motors. Inside the torso sits a flexible water container and a compact electric pump that plays the role of a heart. When the pump runs, it pushes water through tubes toward bundles of artificial muscles.
These artificial muscles, branded as Myofibers, are soft actuators that contract when pressurized water flows through them. They wrap around a lightweight polymer skeleton with bone-like pieces for the ribs, spine, shoulders, and arms. When one group of muscles contracts and the opposite group relaxes, the joint between them moves, just as in a human body where biceps and triceps work as a pair.
A hydraulic “vascular system” moves water like blood
The company often describes the plumbing inside the robot as a kind of artificial vascular system. In people, the heart pumps blood through arteries and veins. In the robot, the electric pump sends water through tubes to the muscles and back to the container.
Valves, which are small controlled gates, open and close to direct the water to different muscle groups. By adjusting pump speed and valve openings, the controller can create gentle motion or fast, powerful moves. Because water is nearly incompressible, hydraulic systems can deliver high force in a compact space, one reason they are widely used in heavy machinery.
Artificial muscles and tendons copy human anatomy
Clone does not simply attach a few hydraulic cylinders to metal bars. Instead, its engineers tried to copy the layout of the human upper body. The torso includes anthropomorphic shoulder joints, an actuated elbow, and a flexible cervical spine for the neck. Artificial muscles and tendons span these joints in patterns inspired by human anatomy.
This biomimetic approach, which means copying biology, has two main goals. First, it can give the robot human-like ranges of motion, such as reaching across the body, shrugging, or rotating the arm. Second, it aims to match human strength and dexterity in a body shape that can wear clothes, fit into chairs, and use the same tools that people use.
Sensors, control, and AI coordinate the motion
To move such a complex body, the robot needs many sensors and smart control software. Pressure sensors track how much water is in each muscle. Joint sensors report angles and speeds. Cameras and other depth sensors can provide vision and feedback from the environment.
Clone plans for its androids to run a graphics processing unit, or GPU, on board, which can handle advanced control and AI models. These models can learn motion patterns, balance the body, and adapt to new tasks. In early prototypes, much of the control still comes from scripted motions and teleoperation, where a human operator guides the robot, but the aim is to add more autonomy over time.
Why Clone Robotics builds biomimetic robots instead of simple machines
Many factories already have robots, but most are stiff industrial arms bolted to the floor. They are strong, precise, and fast, yet they are bad at handling random objects in tight spaces designed for humans. They also need safety cages because they move with hard, unforgiving metal parts.
Clone Robotics is taking a different path. Rather than redesigning whole factories around robot arms, it wants androids that can walk or roll into existing spaces and use the same tools, switches, and machines that people do. To do this, they are trying to copy the human body from the inside out.
From robotic hand to humanoid torso and android
The company’s first major product was the Clone Hand, a robotic hand with artificial bones, joints, and muscles that can rotate its thumb and catch a ball using a tracking glove. This hand showed that hydraulic artificial muscles could deliver both strength and fine control in a compact package.
From there, Clone built a two-arm torso with realistic shoulders, an actuated elbow, and a flexible neck. Later, they extended the concept into Clone Alpha, a full musculoskeletal android with over two hundred bone-like parts, a soft exterior shell, and a breathing system that makes the chest rise and fall. On its website, the company describes the android as a soft-bodied effector that is “powered with only water and electricity,” highlighting its water driven muscle system.
Comparing Clone robots with Tesla Optimus and other humanoids
Clone’s robots sit in a fast-moving field. Tesla’s Optimus, Boston Dynamics’ Atlas, and several other humanoids mainly use electric motors with gearboxes at each joint. These designs can be easier to model and control, but they tend to feel rigid and may need thicker shells or padding to be safe around people.
By contrast, Clone’s water powered robot muscles aim for a softer, more organic feel. The company claims its Myofiber muscles can contract faster than human muscle fibers while still being as plush as a stuffed toy on the outside. This could make physical contact safer and allow the robot to squeeze through tight spaces or absorb bumps without damage.
However, hydraulic systems bring challenges. They can leak, need careful sealing, and add complexity from pumps, valves, and tubes. Managing noise, heat, and maintenance in real factories will be key tests for the design.
Benefits and risks of lifelike robot bodies
Lifelike motion has clear upsides. A robot that moves like a person can more easily learn tasks by copying a human operator, for example through teleoperation where the person’s movements are mapped onto the robot. It can also use off-the-shelf tools and work in spaces sized for people.
On the other hand, the same human-like look and movement can unsettle observers, a reaction often called the uncanny valley. Some people find the Clone torso and android creepy or dystopian, especially when they twitch or breathe without a face. There are also broader worries about job loss, misuse in conflict, or surveillance.
Companies building these robots will need to address safety standards, data protection, and ethical use. Clear rules on where and how humanoid robots may be deployed will help reduce fear and build trust.
Where water powered humanoid robots may be used
Clone Robotics says it is not aiming first at home chores, even though some marketing clips show the android making sandwiches or vacuuming. Instead, the company emphasises uses in industrial assembly, logistics, and other tasks where human-like hands and arms are the main bottleneck.
Industrial and service tasks that need dexterity
Many factories still rely on people for steps like plugging small parts, routing cables, or handling flexible items that are hard for rigid machines. A humanoid robot with biomimetic robot muscles could take on some of these tasks, especially in settings that are repetitive, risky, or require work in tight spaces.
Water powered humanoid robots could also help in warehouses, packaging centres, or service jobs that involve frequent lifting and moving of varied objects. If they can operate standard tools and controls, they might slot into existing workflows more easily than specialised machines.
Medical and rehab uses of robotic hands
Beyond industry, Clone is exploring medical uses for its robotic hands. In some scenarios, a therapist or surgeon could control a robotic hand remotely to help a patient perform exercises or to manipulate tools in a sterile or dangerous environment.
The company has suggested that teleoperation, where a user’s movements are tracked and mirrored by the hand, could support rehabilitation by letting patients or clinicians guide precise motion without being physically present. Similar ideas already appear in other systems, such as a Japanese capsule interface that lets operators control a humanoid robot with simple muscle twitches.
Research on safe, soft robots around people
Soft robotics is a growing research area that tries to make machines with flexible bodies that can safely share space with humans. Water powered artificial muscles fit this trend, because their compliance, or ability to yield under force, can reduce the risk of injury.
Clone’s work adds to other projects that use tendon-driven joints, cable systems, and foam or rubber exteriors. As more labs and companies experiment with these designs, we may see standards emerge for how soft a robot should be in different settings, and how to certify its safety.
Sources & related information
Clone Robotics – Android product page – 2024
The company’s own page describes the Clone android’s Myofiber muscle technology, soft body, polymer skeleton with bone analogues, and water powered hydraulic system, presenting it as a biomorphic design with human-level strength. It highlights that the robot is powered only by water and electricity and includes a GPU for advanced control, as outlined on the official Clone android page.
LiveScience – Watch this terrifying robotic torso spring into life – 2024
This news piece covers a viral video of the Clone torso mounted on a pelvis, explaining how battery driven water pumps, valves, and a built-in water container flex the artificial muscles to create its unsettling movements. It confirms key technical details, such as the hydraulic powering system and the focus on realistic motion, in a short report on the terrifying robotic torso.
The Sun – Creepy faceless ‘Clone Alpha’ robot with synthetic organs, artificial muscles and even veiny arms coming next year – 2024
This article reports on the Clone Alpha android, noting its more than 200 synthetic bones, artificial Myofiber muscles, and a water based hydraulic system driven by a compact pump that acts like a heart. It also mentions early pre-order plans and example skills like making sandwiches, which show how the company imagines the robot in everyday tasks, as described in the coverage of the Clone Alpha humanoid robot.
IndustryInsider – Clone Alpha: a humanoid robot built with synthetic organs and artificial muscles – 2025
This feature article places Clone Alpha in the wider humanoid robot landscape, contrasting its water powered Myofiber muscles and biomimetic skeleton with motor-driven robots from larger firms. It traces the company’s path from a dexterous hand to a torso and finally to a full musculoskeletal android, and explains how its hydraulic artificial muscles aim to bring fluid, human-like motion to industrial and service work, as discussed in the profile of the Clone Alpha humanoid robot.
Interesting Engineering – Watch: Ghostly white humanoid robot with water-powered muscles unveiled – 2024
This article introduces the Clone humanoid torso and explains how a water powered hydraulic system drives its artificial muscles, with a focus on the creepiness and promise of the design as seen in a demo video. The piece also notes the company’s earlier work on a biomimetic robotic hand and its goal of industrial, not household, uses, which you can see in the report on the water powered humanoid torso.
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