|Affiliation||White Scarf Pirates|
|Previous Affiliation||World Nobles|
|Previous Occupation||World Noble|
|Team||White Scarf Pirates|
|Devil Fruit||Omoi Omoi no Mi|
Hei (黒（ヘイ), Hei), previously known as Saint Gerard, is a Pirate who serves as the Archaeologist of the White Scarf Pirates. Born a World Noble, the life of a Tenryūbito never appealed to him and he found all the practices of his fellow World Nobles to range from the idiotic to downright inhumane. Greatly interested in history and driven by a desire to see the world, he was always considered by the other World Nobles to be the black sheep of his family. He ultimately managed to fake his death and escape from Mariejois to start living his life as he wanted to. He took up the name Hei and soon discovered that he had the ability to read Poneglyphs.
During his travels he met a young woman by the name of Aisa Himegami and following a series of events where she ended up saving his life they started travelling together. When Aisa was defeated by Eustass D. Sid and agreed to join his pirate crew, Hei also joined Sid's crew with her. It is his dream to visit as many Poneglyphs as possible and read all of the history stored in them.
Hei is a tall and lean young man with blue hair and a strange reddish tattoo across his right eye, which he had since his childhood.
As a World Noble, he was normally dressed in a more elegant variation of the white robe worn by all World Nobles. It consisted of a long white tunic with black stripes across the edges and on the upper part of the arms, a decorated collar, large straps connected to decorated buckles closing the inducement on the front over a dark shirt, and matching pants and shoes.
As Hei he is normally dressed in dark clothes, with his attire consisting of a whitish blue shirt over a a skin-tight sleeveless purple shirt. Over the shit he wears a hooded dark blue coat with light blue edges, two strings with shield-shaped pendants hanging down from the hood and a prominent golden symbol on the left part of the chest, similar in design to the tattoo sported by Aisa and Sid.