A Jewish scholar of sorts - frequently vanishes to study in his invisible corner - wearing the proper black suit, beard, linen shirt, trouser legs tucked in socks, etc etc, supposedly the network guy and hardware guru of the office. Generally I could rely on him that whatever I tell him to do won't be done (I guess I'm just a goy) until it becomes entirely necessary, or if the alternative is that I get there and do it on a saturday.
But then when they were late paying me for the odd jobs I did, I would only need pull his sleeve (via email) and the check would soon arrive.
The nickname applied only in our internal family talk.