If being served papers for a criminal court case, do the papers have to be handed directly to the person named on the papers?

No, interestingly enough every state is different in service of process specifics but generally speaking a subpoena for anything can usually be served at the residence by anyone who has the authority to be at that location.  If you have been served papers for someone else or if someone else was served papers intended for you, you should contact an attorney to see if service could be challenged or if you need to respond.