|Race & Species||Human|
X had large spiky hair and wore round glasses that fully covered his eyes. He wore the typical Judge uniform suit.
Not too much was shown regarding his personality. What is known is that he took his job as a judge and referee seriously and was not afraid to intervene between people to stop any unnecessary fighting even if it resulted in getting hurt.
His full abilities were unknown as he was killed before he got to display them. However he had considerable pain tolerance, with Jae-Kal Taek piercing his hand and Jin Mo-Ri breaking his arm without so much as flinching. It is presumed that he possessed a charyeok as he negated Jin Mo-Ri's Ice Kick with a single hand. He is also capable of manipulating and destroying huge objects, as shown when he made the entire duel ground explode during Mori and Ilpyo's duel.