Basic Sysadmin
Some knowledge of grappling (a lazy half guard would probably do it).
Sullen work demeanor
a familiarity with DiS music
The usual bank details/passwords etc
It would probably run into difficulty when chatting to the TV then again they’d probably prefer having someone who wasn’t a chatterbox 
What sort of a nerd do you think I am?
And no, doppelgangers have been around much longer than that old shite.
I reckon people would twig when it changed its shape again, since most people know I can’t do that.
It would do that in the toilet cubicles, it’s not a div.
We’re all contortionists in toilet cubicles when struggling with a particularly difficult movement.
Ok then I retract my answer and replace it with “almost immediately, because they’d notice that it’s not a div.”