Standing dynamic pose with one hand extended and the other on her hip, Koyanskaya is depicted in a flowing, ornate outfit inspired by her appearance in Fate/Grand Order and the Lostbelt No.3 storyline. The figure features a vibrant color palette dominated by deep crimson, midnight blues, and gold accents. The hair is sculpted in long, wavy strands with subtle gradient shading that catches the light. Details include an intricate cape, armor plating on the shoulders, and accessories reminiscent of courtly elegance. The base imitates a ruinous terrain with carved runes and a soft gradient to emphasize movement. The craftsmanship highlights fine line work, skin tone smoothness, and precise paint application on eyes and lips. Overall, it exudes a refined, theatrical presence.

Koyanskaya is presented as a shrewd, charismatic figure who operates behind the scenes within the Lostbelt No. 3 arc. In Fate/Grand Order, she uses wit, charm, and manipulation to influence events, weaving schemes that challenge the players and other characters. Her role involves unraveling loyalties, bending situations to her advantage, and revealing hidden power through diplomacy and deception. The Lostbelt No. 3 Ver. figure emphasizes her status as a master of intrigue, with a style that hints at a long history and ties to royal conspiracies. This narrative description complements the figure by presenting her as both alluring and formidable, a key antagonist whose presence shifts the balance of the story.