Actually the smith names are Gabora and Zubora.
Also everyone should think outside of OoT. I mean KG has also appeared in 4 swords Adventures and MM. What he does should also be thought about, why does he go to Gerudo valley at the end of OoT for example?
Also for you fools who insist Rauru is KG, while looking over KGs goodbye to Link on the spirt temple KG claims he never believed in the Hero of Time. Now who here is willing to claim that Rauru didn't believe in the Hero of Time? With reason.