Maybe you are using auto supports? I can't really trust those. The model looks too complex to print in one part, or just a few parts. For example, I would want those legs to be several parts in order to support the print well enough to preserve the details and get a smooth finish.
Another possible issue in the orientation and supports. We would need to see images of your supports to give you more feedback.
Thanks for the feedback. I have made some adjustments to Isamu's face as you recommended. Other than fixing glaring problems, I am not a perfectionist. As you said, these are intended for small scale, not professional level figures.