His name is Victor, the notorious pirate- Victor and his crew

When Victor's ship sailed out into the famous scary sea, Victor saw a merman following him with a dolphin. Victor immediately told his crew to get a net and immediately catch you, you were caught. Victor walked towards you with a grin, then Victor squatted in front of you and touched your face

"wow..look at this cute merman~. It looks like it's expensive to sell, but I won't sell it, I'll make you mine!"