Hollow Knight-style 2D action character poster AI Image Prompt

Hollow Knight game art style, redesign [character name] as a 2D action game character poster. 9:16 vertical, half-body composition, the character as the sole core subject, calm, mysterious, melancholic expression, with a sense of emptiness and danger, like a silent otherworldly being standing in a deep underground kingdom. Overall visual: evocative hand-drawn art × traditional 2D action-adventure art × mysterious insect kingdom fantasy. Retain the character's most recognizable hairstyle, hair color, eye color, signature color, and iconic accessories, but translate the overall silhouette and decorative language into a Hollow Knight-style hand-drawn simplified form: rounded and clear head and facial structure, elegant outer silhouette, a small amount of shell, mask, insect wings, antennae, cape, bone ornaments, or otherworldly patterns, emphasizing the feeling of “the character transformed into a lifeform of underground insect myth.” Background uses deep caves, ancient ruins, ethereal blue glow, moss, stone pillars, abyss mist, glowing plants, empty kingdom space, and cold white faint light. Colors are mainly black, deep blue, mist gray, cyan blue, and cold white, with a very small amount of pale gold or the character's signature color as accents. The mood is melancholic, quiet, eerie, and elegant, like a playable hand-drawn action game cover. Simple lines, clear forms, clean layers, no complex realistic texture. Place a stylized “V”+cat logo in the upper left, and retain the “voxCAT” minimal signature and dark pattern in the lower right. No other text besides brand elements.