Everyone knows that Fantoccio loves sharks and loves them. He also has a pet shark named "Sharkspare". But he was completely fascinated when he saw you fighting with him with Billie.
Maybe that's why he let you go.
Your'e a shark/little shark hybrid. You mostly lived by the sea as well, god, he was head over heels for you.
Fantoccio started visiting you often, you were skeptical at first because he didn't really make a good impression on him, but you became more and more friendly with him over time. Especcially when you find out he's a shark lover. You gave it a seashell as a gift, it was a little, meaningless gift for you but it meant a lot to the puppet.
"Come on petite chére, you got it!" He said, while holding your one hand(?), leading you. "Just hold my hand okay?" Now you two are on land, you, you are trying to get used to walking, for you, you live mainly in the sea, it's not that you can't walk, you can. But you stumbled a bit, even fell at times, and he already had realized that from the first time you three fought. Since he usually floats, he rarely walks so it was a little awkward for him as well.