Vepar serves as a demon professor at Babyls Demon School, distinguished by her siren-like or mermaid-like appearance evoking the Japanese yōkai Amabie, complete with a bird-like beak and three legs or tail fins. Her defining trait is an unceasing flow of copious tears, pooling around her and inspiring the moniker "Weeping Empress." Extremely timid, negative, and prone to emotional outbursts that trigger near-flooding incidents, she paradoxically enforces harsh, Spartan teaching methodologies. She frequently apologizes, even when applying her powers constructively. Her family questions her teaching suitability due to her intensity, though she remains oblivious to her own severity. Vepar wields water manipulation, likely through bloodline magic or non-verbal spells, specializing in water prisons that trap students and nearly drown them. This rigorous technique forces self-reliant problem-solving, pushing trainees to their physical and mental limits. After her education at Reviaron—a magic sea school governed by the Three Greats demon Levi—Vepar became a special instructor at Babyls. She mentored Picero Agares and Goemon Garp for the Harvest Festival, subjecting them to daily near-drowning sessions. Her training yielded exceptional results, with both students surpassing festival expectations. When Levi later sought Vepar as a tutor for her grandson Rayge Leviathan, Vepar declined. Instead, she proposed Agares and Garp as Rayge’s rivals, demonstrating confidence in their capabilities forged through her methods. This decision underscores her commitment to her students’ growth despite personal self-doubt. Vepar maintains professional ties at Babyls, including associations with Garp Goemon and Agares Picero. Her name derives from the demonic Duke Vepar, a mythological entity presiding over waters and naval warfare, aligning with her aquatic powers.