Kou Terumi

Kou Terumi is one of the main characters of Yu-Gi-Oh! Underground. He is the leaders of the group of Synchro Summon users, known as the Rings Gang, and is one of Yukito Ousama's greatest rivals.

Appearance
While his main attire is currently unknown, as he is always seen wearing a black robe, Kou has blazing crimson hair that parts in two in the back and is said to resemble the head of a bird. He also has red eyes.

Personality
Kou has shown that he is calm and collective, almost to the point of being completely stoic, in most situations, but also has a more playful side. This is mostly shown through his interactions with Yukito, and Kou's constant teasing at Yukito's young age. He is also known to have a more serious side that he rarely shows.

Biography
Kou apparently inherited the Leader status of the Stars Gang a few months prior to the start of the Duel Wars from a currently unknown person. As such, he actively participated in the Duel Wars as acting commander of the Synchro Summon users, although he apparently lost at the hands of Yukito.

Abilities
Kou seems to be able to easily read people, including, but not limited to, people he Duels. He often describes his observations through seeing "the color of people's flames". His observations of various people are listed below:

Deck
Kou uses a Phoenix Deck, based on the use of Synchro Summoning and Ash Counters. His main Ace is Eternal Ash Phoenix.