He'll speak up if Lucas tries to make the nickname stick, don't worry.

"You and most of the people on the ship, fortunately." Fortunately because it means they likely haven't had to deal with the situation that César's world has.

He nods and jerks with his head to indicate they should start walking out of the room in a second. "Mine's fine. Rich is a good kid, and at worst, he gets to have this information reinforced."

Oh, there's a little smile at thinking about Rich. He really is a good kid. Maybe even eventually César's kid.