Squalo Vepar is a Pure-Blooded Devil from the House of Vepar, one of the extinct families from the 72 Pillars, which held the rank of Prince and famous Devil families for their water-based magic and combat-oriented techniques. He is also known as the "Scourge of the Underworld" and "The Devourer" for his infamous acts where he manage to go on a total rampage of slaugtherfest against many devil nobles in his days before his fated life imprisonment in the Underworld's most hellish prison.