Originally Posted by rachibaby
Instead of having imaginary friends, he becomes other characters.

My son was similar. No imaginary friends, he just became different characters.

He talks a lot with his hands too. He says he likes to watch people. He watches their body language and is able to mimic it. He is good enough at doing impressions that I can usually tell who he is trying to be. I think he's funny until he does his imitation of me.