Even in preview they should not show in a render when hidden.

Did you turn off the control props in the body of the figure? Any commercial figure will have a control to show or hide all the body handles.

If you've made new handles they will need to be setup to be controlled by a master dial in the body like commercial content. (That's subject for a tutorial.)

Or, you can manually hide a body handle. You can't click a body handle to select it. You have to pick it from the actor list in the "Actor" list.

Then uncheck "Visible" object's properties tab.

If you need to set up a newly created body handle let me know that's a bit deep for a forum thread. I'll need to do a tutorial on how to set those up.