Check the joints and hidden back
Look between the arms and torso and around the ankles. AI infers surfaces that are not visible in the image, so inspect intersections and texture continuity.
Prepare for posing separately
This result is a static mesh without a skeleton or animation. Retopology, rigging and skinning are separate steps before a game or animation workflow.
Match your performance budget
The original contains 97,226 faces. Review the silhouette after any simplification, and test materials and scale in your target engine.