Shinku is depicted in a dramatic, aristocratic pose that captures her regal bearing. The figure features a crimson dress with multiple layers of lace and ruffles, accented with white trim and delicate gold detailing on the bodice, cuffs, and hem. Her long, flowing hair cascades around her shoulders, framed by a refined headpiece and ribbons. The sculpt yields a refined, doll-like face with a calm, confident expression that hints at her commanding personality. Accessories such as a small fan and an ornate stand complete the aesthetic, while the paintwork adds subtle shading to the folds, shadows, and highlights that define her garment. Overall, the presentation emphasizes her noble, enigmatic charm as the Rozen Maiden Shinku.

Within the Rozen Maiden universe, Shinku is a refined and powerful doll created by Rozen to guard and guide the other dolls through the dangerous Alice Game. She carries an air of dignity and strict dedication to her role as elder sister to the Rozen attendants, offering direct counsel and fierce loyalty to her owner. Shinku embodies a sense of justice and pride, rarely bending to sentiment, yet she shows a protective side toward Jun and the other dolls when danger looms. Her central quest revolves around commanding the mysterious Alice energy, contending with rival dolls, and striving to influence the fate of the game. Through trials, wit, and occasional tension, Shinku maintains her status as the iconic crimson guardian within Rozen Maiden.