Kozuki Momonosuke

Momonosuke is the son of Kinemon.

History
He was first mentioned when Kinemon told Sanji that he came to Punk Hazard to save his son. His name was revealed when the samurai was asking if the giant children in the Biscuits Room had seen him.

Later, a little girl mentioned that Momonosuke went into the "Secret Room" he was not supposed to go into and then changed into a little dragon. Whether or not he is the dragon that was defeated by his father and the Straw Hat Pirates is currently unknown.