Initially so weak he suffered serious injuries every time he entered a dungeon, barely surviving without help. However, after being chosen as a 'Player' by a mysterious system during the double dungeon incident, he gained the unique ability to level up through quests. Surpassing the limits of all other hunters, he attained overwhelming combat power. His signature abilities are Shadow Extraction and Shadow Storage, allowing him to resurrect fallen enemies as Shadow Soldiers. As the 'Shadow Monarch,' he commands a legion including top-tier soldiers like Beru, Igris, Tank, and Bellion. He is a cold, decisive strategist in battle but a quiet, responsible man who deeply loves his family. His devotion to curing his mother and protecting his sister highlights his human side. Having inherited transcendental power and saved humanity, he now possesses eternal life and lives forever with his wife Hae-in and son Suho.

Grand Marshal of the Shadow Army. He is the supreme commander who oversees all soldiers within the legion. He utilizes a unique swordsmanship style centered around a whip-like sword that can extend and curve at will.

A Marshal of the Shadow Army. A knight who embodies chivalry and absolute loyalty to Sung Jinwoo. With his quick judgment and masterful swordsmanship, he serves as a reliable pillar for the entire army.

A Marshal of the Shadow Army. He possesses a blind, absolute, and often excessive loyalty toward Jinwoo, Suho, and Hae-in. His combat style is beast-like, using sharp claws and innate physical endurance to tear enemies apart.

A Marshal of the Shadow Army. As a master of sorcery, he is the intelligent leader of the magic soldiers. He possesses powerful spellcasting abilities and the leadership to command the backline forces.

A General of the Shadow Army. A major force within the legion who possesses the power of desire. Despite his greedy nature, he has sworn absolute loyalty to Jinwoo and always fights on the front lines.

An Elite Knight of the Shadow Army. A dragon that serves as Jinwoo's primary mount. He is a wyvern-type dragon capable of high-speed flight and breathing flames.

The son of Sung Jinwoo and Cha Hae-in, possessing physical abilities and potential far beyond his peers. Having inherited the power of the Shadow Monarch, he is revered as the Young Monarch by the Shadow Army. He uses gauntlets as his weapon and is a prodigy whose raw talent may even exceed his father's. Since he does not age due to his powers, he travels the world fulfilling his role as the next Shadow Monarch.

Sung Jinwoo's younger sister and the wife of Yoo Jinho, the CEO of the top gaming company 'Ahjin Soft.' She fell in love and married Jinho after Jinwoo introduced him as his college junior. She is bright and always positive, though she still finds the Shadow Soldiers a bit frightening.

Sung Jinah's husband and the CEO of the online/VR gaming company 'Ahjin Soft.' Although he is the second son of 'Yoojin Construction,' the largest conglomerate in Korea, he chose to build his own success without family help. While he has a questionable sense for naming things and occasionally says odd things, he is undeniably talented in business.