WN/Zegion

Guardian of the 80 floor.

Personality
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.

Background
When he was weak and rare insect, he was saved by Rimuru and 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.

Chronology
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.

Abilities
Ultimate Skill
 * Illusion King Mephisto