Art style: Pixar-like 3D.
Donatello "Don Brain", shown full-length from head to feet, standing upright, the entire figure visible, centered in a dim underground hideout crowded with tangled cables, glowing monitors, radio scanners and wiretap gear filling the sides. A tall lean mutant turtle humanoid with olive-green leathery skin, a purple bandana mask knotted around his eyes, and thoughtful intelligent brown eyes behind slim wire-rimmed glasses. He wears a rumpled dark grey hoodie under an open worn charcoal jacket, cargo trousers with many pockets, and scuffed sneakers on three-toed feet. A laptop bag and coiled headset hang across his shell; a headset earpiece sits at one ear. Calm, analytical, faintly smug expression, one hand adjusting his glasses, the other holding a small hacking device. Wiry build, slightly hunched studious posture.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image in the following art style:
Stylized cinematic 3D, expressive animated characters, soft rounded forms, polished materials, warm cinematic lighting, charming facial expressions, high-end animated film look.
Every surface, skin, fabric, material, and environmental element must be rendered in this idiom.
