"Photorealistic full-body character design of an original non-human mascot: a sleek, bipedal axolotl postal courier with oversized expressive eyes, smooth pearlescent skin, and a clear silhouette, standing in a neutral turnaround-ready A-pose with subtle attitude (one foot slightly forward). Detailed costume design: weathered canvas messenger harness, micro-stitched patches, tiny brass stamp tools, waterproof satchel with embossed logo space, and a small LED headlamp integrated into a soft cap; include a simple studio cyclorama background with faint floor grid and minimal prop label card for scale. Shot as a high-end product-style concept photo on a 50mm lens, eye-level, crisp sharpness, soft diffused key light with gentle rim lighting to separate the character, 1:1 square composition, ultra high resolution."