Yeah, I have an alter ego. Name's Tony, cool guy.
When I'm around new people and places I become Tony, make friends, laugh, and be a cool guy to hang around.
The real challenge is being consistent, merging all of your sides into one. It's a tough process, be the smart one or be the funny one. The quiet or out spoken.
Without consistency in your personality you can destroy relationships and even feel as if you don't know someone and they don't know you even when you hang around with them 24/7.