It is almost inevitable that when something is successful, attempts will be made to copy it. It seems that the MOTU were no exception, and there are various examples of copies around the world.

I bought the figure on the right from a seller in the US. I now know this character is called Zaardoom. He is from a line called Defenders of the Planets. Many thanks to Fernando Seage for solving the mystery! Fernando sent me this link which will take you to a site with information about the Defenders line.

At first glance, Zaardoom looks like a MOTU figure. However, the build quality is not as good as the Mattel toys. He does not have a spring-powered waist, and there is no marking as to the company's identity (it was Sparkle Toy Inc.) or the country of manufacture. More pictures and information about the Defenders line can be viewed here.