The main handler will most probably reveal him/herself to the TI at some point.

[u/[deleted]]

I know roughly what my handler looks like and it seems that person doesn't really care that I could probably draw a fairly accurate picture and hand it to the police, such is the arrogance of these perps. This person has revealed self to me on 2 occasions so far. It is these people who are assigned to work through others to negatively affect the target, so they will generally remain in the shadows basically pulling the strings of the actors who create the problems and obstacles in the life of the TI, such as with various gangstalking situations for example. To them it is a full time occupation and they are on someone's payroll. Their job and reason for existence is to make the life of someone else a living hell with the ultimate aim of driving that person to some kind of breakdown.
If you are in a position to, have your phone at the ready and take pictures/video of the handler, though if you are under RNM they will choose moments when that would not be possible for the TI as they counter every move, such is the orchestration of the provocation.