He also had a notable impact upon the development of the Cybermen. He was the first to give the Cybermen a "teardrop eye" design, something that persisted even into the BBC Wales era. Indeed, his Wheel in Space design of the Cyber-head was the first to dispense with markings that highlighted the eyes and mouth. In effect, he was the first to create a head that looked like it was die-cast from a single metal. Moreover, he was the first to make the Cyber-costume completely silver, implying a totally metallic body. This notion, too, would be a key element of most subsequent Cyber-designs, and was especially important in the design of the BBC Wales version of Cybermen.