Haha, if for any reason you need comic book details at other times, I am your guy.
The first things to notice about Tim would probably be that the way he moves, physiology, and etc. indicate he is a world-class martial artist and gymnast.... and totally uninvolved in school athletics. He scans a room when he enters, never sits with his back to a door or window if he can help it, shreds credit card receipts before he throws them away... he's a classic paranoid, which is probably pretty weird in an eighteen year old. If Sherlock wants to rattle off a list of things Tim can obviously do, I have a decent list here.
He also carries lockpicks and other concealed gear behind his belt, takes pains never to wear the color red as a civilian, and Holmes at least can probably tell that some of his social awkwardness is an act.
no subject
The first things to notice about Tim would probably be that the way he moves, physiology, and etc. indicate he is a world-class martial artist and gymnast.... and totally uninvolved in school athletics. He scans a room when he enters, never sits with his back to a door or window if he can help it, shreds credit card receipts before he throws them away... he's a classic paranoid, which is probably pretty weird in an eighteen year old. If Sherlock wants to rattle off a list of things Tim can obviously do, I have a decent list here.
He also carries lockpicks and other concealed gear behind his belt, takes pains never to wear the color red as a civilian, and Holmes at least can probably tell that some of his social awkwardness is an act.