Male subject here looking for something interesting. I'd like a wholesale personality replacement. It could be something that comes out only from time to time like Dr. Jeckly and Mr. Hyde or something more permanent.
The key part is the personality is of your choosing and I won't know about it. I assume this will be an ongoing thing to make sure it completely takes over when it is supposed to.
I have hypnosis experience already and so I can go under without too much effort. Please PM me for details if this is something that interests you.