kalownafoxpard was bored and made this up for me.
I think it's rather nice.

So the names Charade.
I'm quite the nice unicorn, really.
My cutiemark is a rather dashing shadow with a fun mask!
Top left is my magic.
However when angry, which never happens, honestly!
My magic goes red.
Not many ponies know much about me. In fact none...
But I'm always helpful to everypony. The ones who upset me often move out.
Suddenly and without warning.