Habordinate
A habordinate is like a subordinate who got a free ticket to the funhouse and doesn’t want to leave.
My boss is a habordinate. He’s been laughing at my jokes for three years straight.
She’s a habordinate. She’s been stuck under me for five years, and she still likes me.
He’s the habordinate of the whole team. He doesn’t even care when I take his coffee.