Illustration of a mischievous raccoon-eared treasure thief with choppy midnight-purple hair, bright amber eyes, and a constellation of tiny freckles across her nose. Her large striped ears are decorated with stolen gold coins, tiny padlocks, and mismatched earrings. She wears a flamboyant cropped emerald jacket with oversized lapels, a dark bodysuit, multiple utility belts, and an assortment of antique keys hanging from chains at her hips. In an energetic close-up viewed from a tilted overhead angle, she leans toward the viewer with a triumphant grin, holding a huge faceted ruby between her teeth while one hand makes a cheeky two-finger salute. A tiny mechanical ferret with brass legs and glowing blue eyes emerges from an open treasure pouch on her shoulder. Her expression is clever, shameless, and delightfully troublesome. The background is a bold warm yellow, with a few floating playing cards and scattered gold coins framing the composition. The overall style is high-end whimsical fantasy illustration with dynamic character acting, distinctive accessories, lively facial expression, and exceptionally detailed materials.