John Smith

John Smith (ジョン スミス, Jon Sumisu) is the infamous "Captain" of the One Pirates, a one-man crew consisting of only him and, at times, various clones of himself, created via the usage of his Devil Fruit, the Gazo Gazo no Mi. Because of the nature of his Devil Fruit, Smith is known as simply Afterimage (残像, Zanzou), and has been on the run for more than 10 years, being chased by Marines, and Bounty Hunters alike.

Devil Fruit
For Further Information: Gazo Gazo no Mi.

Trivia

 * The name "John Smith" is a common placeholder name, reflecting Smith's one-man crew shtick, and ability to clone himself.