When I started on YouTube I wore a mask all the time. At first it was only one mask - "Mr Angry". After a while I wanted to expand and I introduced different masks. Then they started to take on lives of their own. Each of the masks had its own character. There were more than a dozen of them in the end.
Then I stopped wearing them.
But they never went away. They're all still inside my head. And sometimes they get out.