Race: Fair Oni [EP: 213.000]
Divine protection: Tempest (Protection of the Storm)
Title: Oni King
Height: 180 cm
Ability:Unique Skill - Great General
Ex - Flame Ruler, Black Flame, Multiple Barrier, Spatial Transfer
Daily Skill - Magic Perception, Heat Detection, Dignity, Herculean Strength
Combat Skill - Demon Flame Transformation
Resistance: Physical Damage Nullification, Pain Nullification, Status
Change Nullification, Spirit Attack Resistance, Nature Effects Resistance

Bernimaru has two jet-black Horns. He is excitable and a confident man. Although his personality was easily excited, he is actually cautious and cunning. He is the commander of Rimuru's army.