Daddy Masterson

Daddy Masterson (ダディ・マスターソン, Dadi Masutāson), also known as Daddy the Father (子連れのダディ, Kozure No Dadi) is a bounty hunter and father of Carol Masterson.

Appearance
Daddy Masterson is a middle-aged man who dresses similar to a cowboy. He also wears a cloak.

History
He knows Captain Smoker, who refers to him as a former equal, and is a former elite Marine Sniper. He is introduced in the Loguetown arc. He met Usopp's father, Yasopp, while in a dueling match. Daddy lost, but Yasopp decided to spare his life. However, this had cost Daddy his pride and as a result, he resigned his position as Marine Sniper. Years later, he meets Usopp in Loguetown and challenges him to a duel. Usopp tried to run away at first, but eventually came to his senses and requested a real duel with Daddy. Daddy instead issued a challenge where Usopp had to hit a far off weather-vane with his slingshot on the first try.

Usopp not only passed the challenge but hits the impossible-to-see gem on the weather vane. Daddy congratulated him, convincing him not to lose courage and that he'll find his father in the Grand Line, and Carol, his daughter, gave Usopp the goggles he had tried to buy earlier.

Early One Piece
Daddy and Carol were originally planned by Oda to be in the Loguetown arc. However, Oda desired the journey to begin at Chapter 100 so the story was cut from the final version. However, both the Loguetown fillers and the Loguetown Novel feature this story. The version of Daddy which is featured in the Loguetown Novels, however, is very different in appearance to the anime filler Daddy. It is unclear if this was Oda's intended version of him as some details about the Novel remain vague.