To mistake one as insignificant as the Great Demon Lord Rimuru...

Your utter foolishness has set the path to be but one.
To fight and defeat me, Zegion.
Struggle with all your might, and burn away the embers of your lives!

—Zegion, Chapter 158 (when Reiha confuses Zegion for Rimuru)

Biographical Information
Name Zegion
Blessing Tempest Crest (former)
Great Demon Lord's Blessing
Title(s) Mist Lord (Dark Phantom King)
True Demon Lord
Ten Lords of the Labyrinth
Insect Kaiser (former)
Age Unknown
Gender Male
Species Water Spirit Insect (Upper tier Divine Monster Spirit)
Evolution Insect beetle
Relatives Apito (Sister)
Status Alive
Professional Information
Country Tempest
Class Special S
Affiliation Labyrinth City
Post 80th floor guardian(formerly)
Guardian Overseer
Debut Information
Web Novel Debut 146

"Mist Lord" Zegion ["幽幻王"ミストロード ゼギオン, "Yougen Ou"Misuto-Roodo Zegion] is the Overseer of the 10 Guardian Lords of the Labyrinth and one of Rimuru's Twelve Patrons.

He is also one of the three strongest subordinates of Rimuru Tempest, along with Benimaru and Diablo.


He was an insect type that had the appearance of a Japanese rhinocerous beetle and a stag beetle. He was 50 cm long.
After Naming
He has a pitch black exoskeleton with visible golden joints. A rainbow colored, sword-like horn protrudes from the center and to its left and right are two antennae as pitch black as the exoskeleton. The exoskeleton took the form of Rimuru's preference (the Japanese rhino beetles).
True Demon Lord


He is extremely loyal to Rimuru. This reflected when the group of soldier accidentally mistook him for Rimuru, Zegion became enraged because this seemed like an insult to his Demon Lord.

He has a strong lust for battle which is part of his natural instincts.

He is a calm, silent man, and never really talks much.

He worships Rimuru as a god.


When he was weak and rare insect, he was saved by Rimuru who covered his wounds with part of his own flesh (slime).

Rimuru then placed into the deeper floors of the Labyrinths to avoid adventurers. However, he quickly became stronger and currently, he's the strongest monster in the Labyrinth and one of the strongest monsters in Tempest.

He has always been very talented at handling Energy, and was able to immediately gain control of his new power when he evolved into a True Demon Lord.

Chronology/Plot Edit

As one of the boss in the Labyrinth, he effortlessly defeated 3 of the Emperor's Personal Guards along with three other powerful soldiers. Afterward, he was rewarded by Rimuru, becoming a demon lord and receiving the title of “Mist Lord” (the ruler of the illusion world)

After Rimuru evolved into a Great Demon Lord, Zegions seems to be getting his skill upgrades from Veldora through Rimuru's soul corridor.

Relationships Edit


Apito: She is one brought at the same time with with himself, Rimuru had healed them by using a part of his own physical. Being the only ones to share the flesh of their master, Apito can be thought to be a Zegion's sister.



Armor and WeaponsEdit

Demon steel was assimilated into his exoskeleton and transformed into a living bio-steel called Adamantine. Its hardness surpasses that of diamonds while retaining the flexibility of living flesh. It is his natural suit of armor. When he evolved into a True Demon Lord he morphed his outer shell into God Steel through shear will power. It now rivaled God class armor.

He received combat training from Veldora and has become very good at hand to hand combat. He has gained very high physical strength and extreme speed. He is able to punch through legendary grade armor.


Sensing: He can sense an individuals abilities from very far away and is able to observe several hundred thousand individuals simultaneously.

Spatial Manipulation: Allows him to transport himself or others around

Spatial Distortion Field: A very high level defense that can block powerful attacks, it is on the same level of Chloe's absolute defense.

Dimension Ray: Zegion can severe dimensions and disconnect space. The ripping apart of space will destroy anyone within its path.

  • Dimension Storm (Phantom Dimension Wave Storm): a dimensional rainbow-colored high energy storm.

Ultimate SkillEdit

  • Illusion King Mephisto
    • Thought Acceleration
    • Space Time Control
    • Multi-Layered Dimensional Barrier
    • All of Creation
    • Mental Domination
    • Illusion World

Daily SkillsEdit

  • Universal Perception
  • Demon Lord's Haki

Battle SkillsEdit


  • Physical Attack Immunity
  • Abnormal Status Immunity
  • Mental Attack Immunity
  • Natural Elements Immunity
  • Hybrid Attack Resistance