Glitchy Gear was the character who inspired the Mechuine concept for me. He then asked if he could use the Mechuines as a bit of background for his character. I was planning to get this pic as a gift for him, just to be a pal and because he doesn't get many opportunities for commissions.
So, Glitchy Gear is a mechuine in disguise, living in Ponyvillle after Equestria and Mechuinos make peace. Back among the mechuines, he was a miner, digging out minerals in order to continue the creation of more Mechuines, among other purposes. In ponyville, I'm not quite sure what he does, but Glitch has said that Glitchy does some exploration.