I have an FBX Character imported with FBX Import Character SOP and I have Electra in the scene. How can I constraint the Electra's hand to the hand of my FBX Character that has animation and simulate ragdoll on Electra, is it possible to combine APEX characters and fbx ones?
Or do I need to rerig my FBX Character into APEX Character to make an combination of both?
Will be thankful for the replies and suggestions.

https://www.sidefx.com/contentlibrary/kinefxapex-workflow/ [www.sidefx.com] has an example. But the short answer is that you do need to bring the FBX character into the APEX world.

Thanks Edward!