Gates is a proud and arrogant Undying warrior he is the most short tempered of the 5 brothers, as when Linley fought against Olivier he was making crude remarks about Olivier down to Linley although they were equal.
Although Gates is a bit rash he's the most hardworking out of the 5 brothers which is displayed when Linley and the others were currently were on a boat crossing the Yulan river he decided to go train instead of sightseeing the view because Barker and Hazer were currently ninth rank warriors(early-saint when transformed) he wanted to reach their level with the other brothers joining him. Although it is true he is the fastest improving of the five brothers as shown when he mastered "Wielding something heavy as though it were light" before the other brothers.
One of 5 brothers, they were sought out and captured by the Radiant Church. After being freed from the Radiant Church, they decide to follow Linley and pledge their loyalty. Gates is a part of the Armand Clan of the Undying Warriors and Cesar gives the Armand brothers a copy of the secret manual of the Undying Warriors, giving them the ability to advance to the saint level.
He was the third of his brothers to reach the ninth rank in human form, and Saint in Undying Warrior form.
Frequently likes to curse.