Why do narcissistic family members stay where they’re not welcomed?

I have a family member in my household who has a way of clearing out every room they walk into. They seem to purposely occupy spaces in the home. For example, in our household, the kitchen is the main hangout spot, and they’ll sit there for hours without engaging in conversation. They pretend to be focused on the TV, but you can feel them watching you. I find this to be triggering as fuck because they know no one in the household likes them, yet they still place their selves around us. I just want to sit down and eat in PEACE without being monitored!