Humans aren't something I ever do much of, but I do have one for occasional interactions.
Enad is that person.
Height: 5'6"
He is a marvel with technology and focused in the study of artificial limbs, seeking to rebuild nerve tissue and replace limbs in a way that the owner never forgot they had them.
He ended up needing to use his own technology on himself after he helped save a person from a burning building, ruining his hands in a way that they never stopped hurting. Thus, he put his focus in making a pair of synthetic arms for himself and replaced each hand at the end of his elbow. He could have made them appear flesh-like but keeps them silvery to show how worthwhile his work is.
Currently he works as a night shift guard, allowing him plenty of time to tinker in the long periods of down time.