The Beast Monarch was the King of Beasts and one of the nine Monarchs.
The Beast Monarch was a huge, muscular man with tan skin, glowing yellow eyes, sharp teeth, and wild black hair. When using his powers, his eyes glowed bright red. He also wore silver fur pelts, a ragged skirt with a thick silver fur waistline, and gold-trimmed white armor on his right shoulder and over his groin area.
The Beast Monarch was an aggressive and arrogant individual with an intense bloodlust towards those he regarded as his enemies. He also displayed a very scornful attitude towards humans and viciously devoured one who had the bad luck to bump into him.
Despite his ferocity, however, the Beast Monarch was selfish and extremely cowardly in the face of power superior to his own. He was also a hypocrite, as he called Yogumunt and the Iron Body Monarch cowards for their refusal to help kill Ashborn's vessel even though he was more cowardly than they were.
Shortly after the Jeju Island S-Rank Gate was finally cleared, the Beast Monarch picked up traces of the Shadow Monarch's power on Jeju and traveled there to make sure. Along the way, he bumped into the Frost Monarch, who had picked up on Ashborn's trail as well, and the two of them agreed that it was about time to finish their war with the Rulers.
Shortly after the Tokyo S-Rank Gate was cleared, the Beast Monarch, Querehsha, and the Iron Body Monarch ambushed Christopher Reed in his home. Although Chris activated his Spiritual Body Manifestation to defend himself, he was still not strong enough to fend off all three of them at once. As a result, they easily murdered him in the battle that followed, leaving his mutilated corpse behind for the humans to find.
After the Frost Monarch learned that the Shadow Monarch had turned against them, he reached out to the other Monarchs and asked them to help him kill Ashborn's vessel before it was too late. Although Yogumunt and the Iron Body Monarch both refused, the Beast Monarch quickly agreed to take part on the belief that Jinwoo was weak and had yet to obtain his full strength.
Several days after a gigantic gate spawned in the skies of Seoul, the Beast Monarch appeared out of the blue and started rampaging across the city, slaughtering hundreds of people in his path.that Jinwoo was weak and had yet to obtain his full strength. Although Thomas Andre put up a good fight against him in an attempt to stop his massacre, the Beast Monarch easily defeated him once he stopped holding back and activated his Spiritual Body Manifestation. But before he could kill Thomas, the Beast Monarch was thwarted by Lennart Niermann, who blinded him with his Charge skill, and then by Jinwoo, who smashed him into the ground with a well-placed axe kick.
With Jinwoo having finally showed up, the Beast Monarch was joined by the Frost Monarch and Querehsha, and the three of them attacked Jinwoo all at once. Although Querehsha was killed during the course of the battle, the Beast Monarch was still able to fatally stab Jinwoo through the chest with his claws, seemingly achieving their mission.
However, just when it seemed like Jinwoo was truly dead, his black heart suddenly began to beat and he started to return to life. Realizing with a panic that the Shadow Monarch was coming, the two Monarchs attempted to finish Jinwoo off for good, but were thwarted by Il-Hwan, who easily overpowered them both and stabbed the Beast Monarch right through his upper jaw. Enraged, the Beast Monarch attempted to attack Il-Hwan again, but stopped in his tracks when he realized that they were too late to stop the Shadow Monarch from descending. Knowing that he was dead meat if he stuck around, the Beast Monarch abandoned the Frost Monarch and fled using one of his portals.
Upon arriving in a jungle located elsewhere in the human world, the Beast Monarch attempted to hide but realized that Jinwoo had followed him. Knowing that he couldn’t win or run away without dying, the Beast Monarch bowed his head and begged for forgiveness. Jinwoo seemingly accepted, but on the condition that the Beast Monarch had to survive five attacks from him first. Realizing that Jinwoo was mocking him, the Beast Monarch transformed to full size and prepared to go down fighting, arrogantly claiming that the human would not leave unscathed. However, this proved to be an empty threat, as Jinwoo effortlessly killed him in four hits.
As a Monarch, the Beast Monarch was an immensely powerful individual.
- Immense Strength: The Beast Monarch possessed immense physical strength. As a testament to this, he was able to fight evenly with Thomas Andre while still holding back and completely overpower the latter once he got serious. He was also able to easily slice through Jinwoo's skin and pierce through his chest with his claws.
- Immense Speed: The Beast Monarch possessed immense speed. He was able to fling himself at Thomas with such speed that the latter wasn't able to dodge in time and keep up with Jinwoo during their battle without much effort.
- Immense Durability: The Beast Monarch possessed immense toughness and was able to withstand an extreme amount of damage in battle without suffering any injuries. He was completely unharmed after Thomas punched him through several buildings and broke his neck, and was also able to tank an axe kick to the head from Jinwoo and come out completely unfazed.
- Telekinesis: The Beast Monarch was able to telekinetically control and move objects, as displayed when he levitated several tons of rubble during his fight with Thomas.
- Spiritual Body Manifestation: The Beast Monarch was able to transform into a gigantic white werewolf.
- Regeneration: The Beast Monarch was able to quickly heal himself from most injuries he sustained in battle, as displayed when he healed back his left arm in seconds after Jinwoo sliced it off.
- Solo Leveling Webtoon: Chapter 107
- Solo Leveling Webtoon: Chapter 140
- Solo Leveling Webtoon: Chapter 152
- Solo Leveling Webtoon: Chapter 156
- Solo Leveling Webtoon: Chapter 157
- Solo Leveling Webtoon: Chapter 158
- Solo Leveling Webtoon: Chapter 160
- Solo Leveling Webtoon: Chapter 162
- Solo Leveling Webtoon: Chapter 164
- Solo Leveling Webtoon: Chapter 165