I get it's often done for the plot, but often in system stories I see this idea that headmates have to give their name to someone, if they're fronting and out to that person as a system. This isn't true. If you don't want to give your name, you don't have to! That's personal information and you may not feel comfortable sharing it with someone outside the system (or even inside the system), which is completely fine. If they need a name, they can use a collective or body name to address you with. You do not have to give your name to anyone you're not comfortable with giving it to.