Apologies if this has been suggested before, but it would be neat to make a character with sufficient mastery of TC appear to be Bob in the minds of people in the warehouse, allowing you to walk near them without getting exposed.
Additionally, it would be amusing for some of them, upon noticing the one they think to be Bob, to strike up a conversation with you, as they might have some serious issues with Bob's work ethics or Bob in general. Depending on your replies during the dialogue they might grow suspicious, due to which the 'spell' on their minds would weaken and make them realise that you are an impostor (kind of like certain dialogue options with people at the Grey Army Base).