Cinematic close-up portrait of a weathered outlaw in a toxic biochemical western setting, wearing a cracked leather cowboy hat and an antique corroded brass gas mask with glowing neon-green glass lenses, rubber breathing tubes connected to a bubbling glass vial on his chest, acid rain droplets on his scarred skin and tattered duster coat, yellow-green toxic fog in the background, photorealistic, 8k, gritty textures, dramatic rim lighting.