Utaen, one of two central antagonists in the film, sports a short, stout frame clad in a light brownish-tan suit featuring pronounced lapels, polished buttons, and matching shoes, topped with a greyish-green beret. His rounded face boasts expansive eyes, a broad mouth curled in a perpetually surprised or amused grin, flushed cheeks, and a mop of dark brown curls. A raccoon-like tail banded with alternating brown and beige stripes extends behind him, while his necktie—a pinkish-purple bow—anchors a reddish-purple gem pendant.

He collaborates with Odoren to sabotage the Spring Carnival in Harmonia, a realm devoted to song and dance. Posing as event announcers, the duo covertly imprisons fairies and pilfers transformation devices from magical warriors. Utaen entices these warriors into elaborate performances to divert their attention, facilitating the thefts. Despite his complicity, he exhibits occasional flickers of skepticism toward Odoren’s schemes, notably questioning his partner’s motives mid-musical number as they unveil their plot.

Their sabotage awakens Harmonia’s guardian dragon, whose fury endangers the kingdom. Following their defeat, Utaen and Odoren face punishment as custodial laborers within Harmonia. The name “Utaen” draws from the Japanese “uta” (song), echoing the film’s musical core. His design and role integrate seamlessly into the carnivalesque narrative, though expanded lore or cross-media appearances remain absent from documented sources.