Unknown User "Firebird SQL Database"

I see a user called "Firebird SQL Database" in my quick user change and System Prefrences > Accounts; but not in the Login Screen. Any ideas what this is?

Thanks in Advance! :)
Have you installed Firebird or any DBMS recently?

Typically server services have their own user. For example mysql has user mysqld. Normally these are hidden users as they are not meant to be directly used by you, but if you open NetInfo they are usually in there.
I have been messing with server stuff lately so that probably explains it. Thanks for the help! :)

It freaked me out at first. lol :p