Libre Fermi
Libre Fermi
 Kanji リブレ・フエルミ
 Romaji Ribure Ferumi
 Alias Poison Snake (毒蛇 Dokuhebi)
• Characteristics•
 Race Snake Human
 Gender Male
 Hair Color Green
 Eye Color Yellow
• Professional Status•
 Previous Affiliation Kingdom of Lugnica
Demi-human Alliance
 Previous Occupation Leader
• Personal Status•
 Status Deceased
• Debuts•
 Light Novel Ex Volume 2
 Manga Daisanshou Chapter 31

Libre Fermi (リブレ・フエルミ) was one of Lugnica's three enemies during the Demi-human War.


Libre was a Snake Human and had a long body with green scales and yellow eyes. He wore a Jiangshi hat and has a black and purple Kararagi uniform with red ribbons.


Regeneration: Libre was able to regenerate lost limbs due his ancestral blood being from the Serpent Tribe.

Equipment: Libre wielded a spear with on both sides blades.

Poison: Libre was able to poison his targets.


  • Libre means free or freedom in Spanish and French.