It's Margs from Dishonest. You know who she is, it's obvious, okay?

This is the form that she takes once her host is either killed or she is ejected from the host. This doesn't happen much, but when in her normal form, she can be killed. (Foreshadowing) (or is it?) (I don't think it is)

Yeah, and if you can't tell who she is, tell me who you think she is. 

Hope you liked it!