No, although they are few and far between. One of the first associations we make with the word robot is some sort of electronics, which by definition contain some kind of electrical conductor, which is a wire in a broad sense. However, some ancient artifacts are being uncovered that do qualify as robots and automatons, but were made before the taming of electricity. There are some wind-up toys currently being made that look and act like robots, but don't have wires. A very good definition of robot is in the links below.
they are all made of metal and have wires
bluetooth,wireless,normal wires
If your question is are robots all made for the same thing the answer is no, their are robots made to do surgical procedures from robots that can change a tire
Yes. Robots come in all shapes, sizes and colors.
Mostly metal, sometimes plastic and sometimes rubber+metal or rubber+plastic. Sometimes all 3.
Not all robots are made of metal but the majority of them are made of metal.
No it is not necessary that all robots have arms and legs. Some robots have only arms and some have legs and some have wheels for their mobility. Basically it depends on the requirements as the requirements dictate how we design our robots. For example in automobile industries robots are used only for welding purposes or in paintshop. These types of robots have only arms not legs.
We all do!
batters
The cast of Calling All Robots - 2010 includes: Nikki SooHoo as Yuriko
There are robots in auto assembly lines all over the world, especially in Japan and Korea
Instead of using wires to model tendons in humans, the use of hydraulics allows better control of force.