It wouldn't be J'onn's first time meeting alien royalty — he's met Starfire, who happens to be your sister — but this is the first time he's been intrigued by said alien royalty. He doesn't know why, but he wants to know you and spend time with you, even though you're a monarch and he's just some Martian guy, and you probably want nothing to do with him.

"Your Highness," J'onn says with a polite nod, offering you a handshake. "It is a pleasure to meet you. Would you like a tour of the Watchtower?"