Anthropomorphic mantis shrimp blacksmith in an underwater forge

“A tall anthropomorphic mantis shrimp blacksmith with bright segmented armor plates in vibrant reef colors — electric blue, sea green, coral orange, and gold — layered over the chest, shoulders, forearms, and tail. The head is more helmet-like, shaped like a fusion of a welding hood and a motorcycle helmet, but clearly biological, with smooth protective shell surfaces, a strong brow, and a small guarded face opening. Long rigid antennae extend backward and outward like reinforced sensory horns, with ridged bases and a sturdy, forged look. The stalked eyes remain prominent, emerging from the head structure with an intense, uncanny awareness. The armor includes bismuth-inspired accents with faceted rainbow crystalline edges and iridescent seams. He wears a heavy leather apron, soot stains, forge tools at the belt, and reinforced gauntlets, standing in an underwater forge with glowing heat, bubbles, and cavitation flashes.