...No, I've got it. A Shakespearean name and a fitting one for his temperament.

[He's beaming down at the crabby little dragon now, even more delighted than before, even as indignation washes over him like a wave and he finds himself wholly unable to take his eyes off its antics.]

Look at him. He even acts like a Lutece when you seek to knock him down a peg — gets right back up and spits in your eye. So, Robert, Rosalind...why not "Robin"?