Hogback

Dr. Hogback (ドクトル･ホグバック, Dokutoru Hogubakku) A Doctor who is a "gienus surgeon" who is famous among all doctors around the world. He was known to save thousand of lives with his miracle operations. Many many worldwide doctors would travel to him and honor him.

But one day, he vanished. It was thought to be a kidnapping plot or he disappeared. His name has faded into legend.

In reality he travelled to Thriller Barque where he does a research to surpass human imagination. He may be responsible for creating all the Thriller Barque Creatures.

Chopper who is a doctor himself knows about Hogback and always wanted to meet him.

Hogback resides in his manison in the middle of Thriller Barque.