In the age of the Roman Empire, in a grand coliseum with floating white flower petals and cheering crowd under clear sky, a marmot with sleek brown fur mid-transformation into arena defiant fighter: fur forging into polished gladiator armor, paws gripping an ancient roman sword, defiant stance, shouting to vibrant crowd, smooth fur-metal textures, warm sand tones with soft red accents, high resolution with commanding intensity.