I have an Emma employee in my main email list (@myemma.com) who is not a member. I don't remember adding him, but is there a specific reason why he might be in there? Just wanted to make sure before I delete him out.
I am betting that the @myemma.com person helped with a support issue at some point. We sometimes add ourselves when doing tests for things like sends or sign-ups. Feel free to delete them from your list.