After retraining, he started taking his clothes off properly, and his posing became more fluid.
Since the parts are color-coded by tag, if you don't assign the correct colors to each part, the assembly is prone to becoming distorted.
Include these prompts at a minimum :
muscular, colored skin, yellow face, yellow tail
clothes:
blue gloves, blue vambraces, hood, beige clothes, yellow pants, gray sleeve, blue gloves, blue vambrace, red belt, blue hood