You have the uncanny ability to blend in and infiltrate any group, no matter how ridiculous it would be otherwise for you to actually be in that group. People will instinctively trust whatever background you give them, and you will be treated befittingly. It would take hard evidence or a show of incompetence to convince others that you are actually an Imposter and not the actual identity that you have given them, but you also have quite the ability to shift fault and blame your failure on others rather than yourself, to the point of making others doubt that the imposter is the one you are trying to frame.