Vegan Eldriel acts as an elf ambassador determined to secure the genetic material of Peter Grill, the world's strongest warrior, to fortify her elven village's bloodline against external mockery and hostile neighboring territories. She possesses long blond hair arranged in twin tails, piercing blue eyes, a petite frame, and a flat chest—a feature that fuels personal insecurity when compared to other women vying for Peter's attention. Her attire typically includes a green dress fastened by a brown belt, white sandals, and a circlet accessory.

Marked by pronounced arrogance and an inflated self-image, Vegan perceives herself as exceptionally alluring and struggles to comprehend Peter's initial lack of sexual interest. This rejection drives her to deploy extreme methods, including forbidden curses, to obtain his seed. Her relentless pursuits tarnish the Eldriel family's honor, prompting her younger sister Fruitalia to independently pursue Peter in a bid to restore their reputation.

Vegan's primary tactic involves infiltrating Peter's residence nightly to seduce him in his sleep. After repeated rejections, she casts the forbidden curse "The Eternal Erection" upon him. This hex induces agonizing, prolonged arousal that risks permanent physical damage unless resolved through intercourse culminating in ejaculation inside her. Confronted with this ultimatum and the threat of irreversible harm, Peter capitulates, resulting in their coerced encounter.

Her name aligns with the series' edible naming convention, shared with elf kin like Fruitalia and their slaves Glucose and Cellulose.