Vergo

Welgo is a man who appeared in Punk Hazard.

Appearance
Welgo is average sized man with a beard and sunglasses. He also wears a knee-length trench coat, and seems to have some strange object attached to his left cheek, which are both not fully striped.

Personality
Through his short discussion with Trafalgar Law, Welgo proved himself to be a shrewd man due to his mistrust of Caesar Clown, and having Monet placed on the island to monitor his actions. He can also come across as somewhat condescending, mocking Law's position by pretending to have some respect for the Shichibukai. Seeing himself as above the Shichibukai, Welgo quickly reminds Law of their difference in power by beating him unconscious.

Abilities and Powers
While it is currently unclear what Welgo's abilities are, he has demonstrated the ability to quickly change the density of an object into something much harder, turning a bamboo stick he was holding into a blackened substance before striking Trafalgar Law with enough force to knock him unconscious. While using this ability, his hand and wrist also turn into the same blackened material. This ability is similar in appearance and effect to Monkey D. Luffy's Busoshoku Haki: Koka, which uses Haki to harden parts of the body and turning it black.

History
Welgo met Law a long time ago. Years later, he assigned Monet to infiltrate Caesar Clown's organization on Punk Hazard, due to mistrusting the deranged scientist.

Punk Hazard Arc
During the scuffle between Caesar, the Straw Hat Pirates, and the G-5 Marines, Welgo comes across Law just as the young man falls to the ground, suffering some kind of internal damage as he begins to cough up blood. Explaining that his mistrust of Caesar lead him to placing Monet on the island, he mockingly compliments Law on his new position. Reminding Law in a condescending manner of how the "adults" will always find out his secrets, Law tries to attack Welgo, who then brutally beats him to the ground, knocking the Shichibukai unconscious.