Shiliew

Shiliew is a villain from the One Piece anime/manga.

Personality
Shiliew is a very malicious man as he used to enjoy killing prisoners at Impel Down for fun. His viciousness in handling the prisoners is so bad that, Magellan was disgusted at it and had to imprison him for the safety of the prison. When Shiliew was released, Magellan trusted him to take down the Blackbeard Pirates but instead he decided to execute his own men that released him. Shiliew for some unknown reasons decided to team up with the Marshall D. Teach and go to the New World. With the Blackbeard Pirates, he warns them about their carelessness and the dangers of the New World.

Abilities
Shiliew is a great swordsman as he was able to cut down many of his targets with just one swipe of his sword. His swordsmanship abilities was strong enough to also inflict damage on Whitebeard during the Marineford War. However, it is unknown how well he is at using a sword in battle.

Shiliew also has knowledge on the cure to Magallen's poison and was able to help cure the Blackbeard Pirates from it.