Delmin, a Myumon of the Devil Mint Demon Dragon race, sports turquoise hair, crimson eyes, and pale skin, crowned with lilac horns and a slender turquoise tail tipped in magenta. She dwells in a weathered apartment, shunning social interactions and often feigning absence, though vendors in Under North hold her in high regard. Her solitude is punctuated by the constant presence of an Onigirikumaman stuffed animal.

Adept at precision tasks, she dons glasses from Glasses Shop BAKI BAKI for such work and takes pride in her self-sufficient culinary skills, particularly her meticulously crafted fried eggs. Her demeanor remains serious and reserved, delivered in a monotone that belies a sharp dry wit and perceptive insights during group interactions. As Mashumairesh!!'s bassist and vocalist, she wields her instrument, "Shubitto Uzishiomaru," with technical mastery, steering practices with constructive feedback.

Her origins trace to the DEVILMINTKIRYU PROJECT, a multi-media venture casting her as DJ DEVILMINTKIRYU and a playable *COMPASS* character, expanded through events like the 3969 DJ Night in Shibuvalley. Initially detached, she gradually forges camaraderie with bandmates Ruhuyu and Himeko, quietly observing traits like Himeko’s flustered reactions to praise.

Delmin’s evolution from isolation to collaboration unfolds through street performances and songwriting. Her quiet enthusiasm and reliability anchor the band’s dynamic, balancing Ruhuyu’s energy and Himeko’s poised leadership. Beyond music, her cross-media DJ endeavors and gaming presence underscore her versatile role within the franchise.