Design an image featuring a muscular character with shoulder-length, flowing turquoise hair, wearing a sleeveless, tattered white top with a golden accessory on the shoulder. The character is striking a dynamic pose, with one knee bent, exuding a sense of raw power. Replace the background with swirling storm clouds and flashes of purple lightning, enhancing the dramatic effect. The color scheme should emphasize vibrant blues and purples, creating a mystical atmosphere.